From ebb351cf78ee6bf3262e6b4b6906f456c05e6d5e Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Tue, 4 Dec 2012 15:21:53 +0100 Subject: llist/xen-blkfront: implement safe version of llist_for_each_entry MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement a safe version of llist_for_each_entry, and use it in blkif_free. Previously grants where freed while iterating the list, which lead to dereferences when trying to fetch the next item. Reported-by: Dan Carpenter Signed-off-by: Roger Pau Monné Acked-by: Andrew Morton [v2: Move the llist_for_each_entry_safe in llist.h] Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/llist.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index a5199f6d0e82..d0ab98f73d38 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -124,6 +124,31 @@ static inline void init_llist_head(struct llist_head *list) &(pos)->member != NULL; \ (pos) = llist_entry((pos)->member.next, typeof(*(pos)), member)) +/** + * llist_for_each_entry_safe - iterate safely against remove over some entries + * of lock-less list of given type. + * @pos: the type * to use as a loop cursor. + * @n: another type * to use as a temporary storage. + * @node: the fist entry of deleted list entries. + * @member: the name of the llist_node with the struct. + * + * In general, some entries of the lock-less list can be traversed + * safely only after being removed from list, so start with an entry + * instead of list head. This variant allows removal of entries + * as we iterate. + * + * If being used on entries deleted from lock-less list directly, the + * traverse order is from the newest to the oldest added entry. If + * you want to traverse from the oldest to the newest, you must + * reverse the order by yourself before traversing. + */ +#define llist_for_each_entry_safe(pos, n, node, member) \ + for ((pos) = llist_entry((node), typeof(*(pos)), member), \ + (n) = (pos)->member.next; \ + &(pos)->member != NULL; \ + (pos) = llist_entry(n, typeof(*(pos)), member), \ + (n) = (&(pos)->member != NULL) ? (pos)->member.next : NULL) + /** * llist_empty - tests whether a lock-less list is empty * @head: the list to test -- cgit v1.2.3 From e909c682d04e55e77a3c9d158e7dc36027195493 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 7 Jan 2013 10:57:14 +0100 Subject: [media] coda: Fix build due to iram.h rename commit c045e3f13 (ARM: imx: include iram.h rather than mach/iram.h) changed the location of iram.h, which causes the following build error when building the coda driver: drivers/media/platform/coda.c:27:23: error: mach/iram.h: No such file or directory drivers/media/platform/coda.c: In function 'coda_probe': drivers/media/platform/coda.c:2000: error: implicit declaration of function 'iram_alloc' drivers/media/platform/coda.c:2001: warning: assignment makes pointer from integer without a cast drivers/media/platform/coda.c: In function 'coda_remove': drivers/media/platform/coda.c:2024: error: implicit declaration of function 'iram_free' Since the content of iram.h is not imx specific, move it to include/linux/platform_data/imx-iram.h instead. This is an intermediate solution until the i.MX iram allocator is converted to the generic SRAM allocator. Signed-off-by: Sascha Hauer Acked-by: Mauro Carvalho Chehab --- include/linux/platform_data/imx-iram.h | 41 ++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/platform_data/imx-iram.h (limited to 'include/linux') diff --git a/include/linux/platform_data/imx-iram.h b/include/linux/platform_data/imx-iram.h new file mode 100644 index 000000000000..022690c33702 --- /dev/null +++ b/include/linux/platform_data/imx-iram.h @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + */ +#include + +#ifdef CONFIG_IRAM_ALLOC + +int __init iram_init(unsigned long base, unsigned long size); +void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr); +void iram_free(unsigned long dma_addr, unsigned int size); + +#else + +static inline int __init iram_init(unsigned long base, unsigned long size) +{ + return -ENOMEM; +} + +static inline void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr) +{ + return NULL; +} + +static inline void iram_free(unsigned long base, unsigned long size) {} + +#endif -- cgit v1.2.3 From 5dbbaf2de89613d19a9286d4db0a535ca2735d26 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Mon, 14 Jan 2013 07:12:19 +0000 Subject: tun: fix LSM/SELinux labeling of tun/tap devices This patch corrects some problems with LSM/SELinux that were introduced with the multiqueue patchset. The problem stems from the fact that the multiqueue work changed the relationship between the tun device and its associated socket; before the socket persisted for the life of the device, however after the multiqueue changes the socket only persisted for the life of the userspace connection (fd open). For non-persistent devices this is not an issue, but for persistent devices this can cause the tun device to lose its SELinux label. We correct this problem by adding an opaque LSM security blob to the tun device struct which allows us to have the LSM security state, e.g. SELinux labeling information, persist for the lifetime of the tun device. In the process we tweak the LSM hooks to work with this new approach to TUN device/socket labeling and introduce a new LSM hook, security_tun_dev_attach_queue(), to approve requests to attach to a TUN queue via TUNSETQUEUE. The SELinux code has been adjusted to match the new LSM hooks, the other LSMs do not make use of the LSM TUN controls. This patch makes use of the recently added "tun_socket:attach_queue" permission to restrict access to the TUNSETQUEUE operation. On older SELinux policies which do not define the "tun_socket:attach_queue" permission the access control decision for TUNSETQUEUE will be handled according to the SELinux policy's unknown permission setting. Signed-off-by: Paul Moore Acked-by: Eric Paris Tested-by: Jason Wang Signed-off-by: David S. Miller --- include/linux/security.h | 59 +++++++++++++++++++++++++++++++++++++----------- 1 file changed, 46 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 0f6afc657f77..eee7478cda70 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -989,17 +989,29 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * tells the LSM to decrement the number of secmark labeling rules loaded * @req_classify_flow: * Sets the flow's sid to the openreq sid. + * @tun_dev_alloc_security: + * This hook allows a module to allocate a security structure for a TUN + * device. + * @security pointer to a security structure pointer. + * Returns a zero on success, negative values on failure. + * @tun_dev_free_security: + * This hook allows a module to free the security structure for a TUN + * device. + * @security pointer to the TUN device's security structure * @tun_dev_create: * Check permissions prior to creating a new TUN device. - * @tun_dev_post_create: - * This hook allows a module to update or allocate a per-socket security - * structure. - * @sk contains the newly created sock structure. + * @tun_dev_attach_queue: + * Check permissions prior to attaching to a TUN device queue. + * @security pointer to the TUN device's security structure. * @tun_dev_attach: - * Check permissions prior to attaching to a persistent TUN device. This - * hook can also be used by the module to update any security state + * This hook can be used by the module to update any security state * associated with the TUN device's sock structure. * @sk contains the existing sock structure. + * @security pointer to the TUN device's security structure. + * @tun_dev_open: + * This hook can be used by the module to update any security state + * associated with the TUN device's security structure. + * @security pointer to the TUN devices's security structure. * * Security hooks for XFRM operations. * @@ -1620,9 +1632,12 @@ struct security_operations { void (*secmark_refcount_inc) (void); void (*secmark_refcount_dec) (void); void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl); - int (*tun_dev_create)(void); - void (*tun_dev_post_create)(struct sock *sk); - int (*tun_dev_attach)(struct sock *sk); + int (*tun_dev_alloc_security) (void **security); + void (*tun_dev_free_security) (void *security); + int (*tun_dev_create) (void); + int (*tun_dev_attach_queue) (void *security); + int (*tun_dev_attach) (struct sock *sk, void *security); + int (*tun_dev_open) (void *security); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM @@ -2566,9 +2581,12 @@ void security_inet_conn_established(struct sock *sk, int security_secmark_relabel_packet(u32 secid); void security_secmark_refcount_inc(void); void security_secmark_refcount_dec(void); +int security_tun_dev_alloc_security(void **security); +void security_tun_dev_free_security(void *security); int security_tun_dev_create(void); -void security_tun_dev_post_create(struct sock *sk); -int security_tun_dev_attach(struct sock *sk); +int security_tun_dev_attach_queue(void *security); +int security_tun_dev_attach(struct sock *sk, void *security); +int security_tun_dev_open(void *security); #else /* CONFIG_SECURITY_NETWORK */ static inline int security_unix_stream_connect(struct sock *sock, @@ -2733,16 +2751,31 @@ static inline void security_secmark_refcount_dec(void) { } +static inline int security_tun_dev_alloc_security(void **security) +{ + return 0; +} + +static inline void security_tun_dev_free_security(void *security) +{ +} + static inline int security_tun_dev_create(void) { return 0; } -static inline void security_tun_dev_post_create(struct sock *sk) +static inline int security_tun_dev_attach_queue(void *security) +{ + return 0; +} + +static inline int security_tun_dev_attach(struct sock *sk, void *security) { + return 0; } -static inline int security_tun_dev_attach(struct sock *sk) +static inline int security_tun_dev_open(void *security) { return 0; } -- cgit v1.2.3 From 6509141f9c2ba74df6cc72ec35cd1865276ae3a4 Mon Sep 17 00:00:00 2001 From: Wei Shuai Date: Mon, 21 Jan 2013 06:00:31 +0000 Subject: usbnet: add new flag FLAG_NOARP for usb net devices We do have some USB net devices, which cannot do ARP. so we can introduce a new flag FLAG_NOARP, then client drivers can easily handle this kind of devices Signed-off-by: Wei Shuai Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index bd45eb7bedc8..5de7a220e986 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -100,6 +100,7 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ #define FLAG_POINTTOPOINT 0x1000 /* possibly use "usb%d" names */ +#define FLAG_NOARP 0x2000 /* device can't do ARP */ /* * Indicates to usbnet, that USB driver accumulates multiple IP packets. -- cgit v1.2.3 From 00441b5e6b98ad6a50b5cb7f88d473e3ea1e0d75 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 9 Jan 2013 10:06:03 +0000 Subject: mfd: Fix compile errors and warnings when !CONFIG_AB8500_BM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/mfd/ab8500-core.c:1015:21: error: ‘ab8500_bm_data’ undeclared here include/linux/mfd/abx500/ab8500-bm.h:445:13: warning: ‘ab8500_fg_reinit’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:448:13: warning: ‘ab8500_charger_usb_state_changed’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:451:29: warning: ‘ab8500_btemp_get’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:455:12: warning: ‘ab8500_btemp_get_batctrl_temp’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:463:12: warning: ‘ab8500_fg_inst_curr_blocking’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:442:12: warning: ‘ab8500_fg_inst_curr_done’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:447:26: warning: ‘ab8500_fg_get’ defined but not used Signed-off-by: Lee Jones Signed-off-by: Samuel Ortiz --- include/linux/mfd/abx500.h | 2 -- include/linux/mfd/abx500/ab8500-bm.h | 29 ++++------------------------- 2 files changed, 4 insertions(+), 27 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 2138bd33021a..e53dcfeaee69 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -272,8 +272,6 @@ struct abx500_bm_data { const struct abx500_fg_parameters *fg_params; }; -extern struct abx500_bm_data ab8500_bm_data; - enum { NTC_EXTERNAL = 0, NTC_INTERNAL, diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index 44310c98ee6e..9bd037df97d9 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -422,7 +422,10 @@ struct ab8500_chargalg_platform_data { struct ab8500_btemp; struct ab8500_gpadc; struct ab8500_fg; + #ifdef CONFIG_AB8500_BM +extern struct abx500_bm_data ab8500_bm_data; + void ab8500_fg_reinit(void); void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA); struct ab8500_btemp *ab8500_btemp_get(void); @@ -434,31 +437,7 @@ int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res); int ab8500_fg_inst_curr_done(struct ab8500_fg *di); #else -int ab8500_fg_inst_curr_done(struct ab8500_fg *di) -{ -} -static void ab8500_fg_reinit(void) -{ -} -static void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA) -{ -} -static struct ab8500_btemp *ab8500_btemp_get(void) -{ - return NULL; -} -static int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp) -{ - return 0; -} -struct ab8500_fg *ab8500_fg_get(void) -{ - return NULL; -} -static int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev) -{ - return -ENODEV; -} +static struct abx500_bm_data ab8500_bm_data; static inline int ab8500_fg_inst_curr_start(struct ab8500_fg *di) { -- cgit v1.2.3 From da0aa7169b97d90f4af39a9dc84d58bbe19d7e78 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 25 Jan 2013 17:09:42 -0500 Subject: USB: add usb_hcd_{start,end}_port_resume This patch (as1649) adds a mechanism for host controller drivers to inform usbcore when they have begun or ended resume signalling on a particular root-hub port. The core will then make sure that the root hub does not get runtime-suspended while the port resume is going on. Since commit 596d789a211d134dc5f94d1e5957248c204ef850 (USB: set hub's default autosuspend delay as 0), the system tries to suspend hubs whenever they aren't in use. While a root-hub port is being resumed, the root hub does not appear to be in use. Attempted runtime suspends fail because of the ongoing port resume, but the PM core just keeps on trying over and over again. We want to prevent this wasteful effort. Signed-off-by: Alan Stern Tested-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 ++ include/linux/usb/hcd.h | 3 +++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 689b14b26c8d..4d22d0f6167a 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -357,6 +357,8 @@ struct usb_bus { int bandwidth_int_reqs; /* number of Interrupt requests */ int bandwidth_isoc_reqs; /* number of Isoc. requests */ + unsigned resuming_ports; /* bit array: resuming root-hub ports */ + #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) struct mon_bus *mon_bus; /* non-null when associated */ int monitored; /* non-zero when monitored */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 608050b2545f..0a78df5f6cfd 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -430,6 +430,9 @@ extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); extern void usb_wakeup_notification(struct usb_device *hdev, unsigned int portnum); +extern void usb_hcd_start_port_resume(struct usb_bus *bus, int portnum); +extern void usb_hcd_end_port_resume(struct usb_bus *bus, int portnum); + /* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */ #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1) #define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep))) -- cgit v1.2.3 From d817ac4e181710cd02b582b759d3123ad2cfa8d8 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Wed, 23 Jan 2013 09:51:04 +0800 Subject: mfd: rtsx: Add output voltage switch hook Different card reader has different method to switch output voltage, add this callback to let the card reader implement its individual switch function. This is needed as rtl8411 has a specific switch output voltage procedure. Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_pci.h | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 060b721fcbfb..271b6e5654af 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -158,10 +158,9 @@ #define SG_TRANS_DATA (0x02 << 4) #define SG_LINK_DESC (0x03 << 4) -/* SD bank voltage */ -#define SD_IO_3V3 0 -#define SD_IO_1V8 1 - +/* Output voltage */ +#define OUTPUT_3V3 0 +#define OUTPUT_1V8 1 /* Card Clock Enable Register */ #define SD_CLK_EN 0x04 @@ -201,6 +200,20 @@ #define CHANGE_CLK 0x01 /* LDO_CTL */ +#define BPP_ASIC_1V7 0x00 +#define BPP_ASIC_1V8 0x01 +#define BPP_ASIC_1V9 0x02 +#define BPP_ASIC_2V0 0x03 +#define BPP_ASIC_2V7 0x04 +#define BPP_ASIC_2V8 0x05 +#define BPP_ASIC_3V2 0x06 +#define BPP_ASIC_3V3 0x07 +#define BPP_REG_TUNED18 0x07 +#define BPP_TUNED18_SHIFT_8402 5 +#define BPP_TUNED18_SHIFT_8411 4 +#define BPP_PAD_MASK 0x04 +#define BPP_PAD_3V3 0x04 +#define BPP_PAD_1V8 0x00 #define BPP_LDO_POWB 0x03 #define BPP_LDO_ON 0x00 #define BPP_LDO_SUSPEND 0x02 @@ -688,6 +701,8 @@ struct pcr_ops { int (*disable_auto_blink)(struct rtsx_pcr *pcr); int (*card_power_on)(struct rtsx_pcr *pcr, int card); int (*card_power_off)(struct rtsx_pcr *pcr, int card); + int (*switch_output_voltage)(struct rtsx_pcr *pcr, + u8 voltage); unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); }; @@ -783,6 +798,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage); unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); -- cgit v1.2.3 From ab4e8f8b7bdfeff0c961fdbbdacb262d68f094c0 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Wed, 23 Jan 2013 09:51:06 +0800 Subject: mfd: rtsx: Add clock divider hook Add callback function conv_clk_and_div_n to convert between SSC clock and its divider N. For rtl8411, the formula to calculate SSC clock divider N is different with the other card reader models. Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_common.h | 3 +++ include/linux/mfd/rtsx_pci.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h index a8d393e3066b..2b13970596f5 100644 --- a/include/linux/mfd/rtsx_common.h +++ b/include/linux/mfd/rtsx_common.h @@ -38,6 +38,9 @@ #define RTSX_SD_CARD 0 #define RTSX_MS_CARD 1 +#define CLK_TO_DIV_N 0 +#define DIV_N_TO_CLK 1 + struct platform_device; struct rtsx_slot { diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 271b6e5654af..4b117a3f54d4 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -704,6 +704,7 @@ struct pcr_ops { int (*switch_output_voltage)(struct rtsx_pcr *pcr, u8 voltage); unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); + int (*conv_clk_and_div_n)(int clk, int dir); }; enum PDEV_STAT {PDEV_STAT_IDLE, PDEV_STAT_RUN}; -- cgit v1.2.3 From 0a8c290ac58a86d5e1f2193abcd4d74ec075e20c Mon Sep 17 00:00:00 2001 From: Ashish Jangam Date: Fri, 25 Jan 2013 14:03:49 +0530 Subject: mfd: da9052/53 lockup fix An issue has been reported where the PMIC either locks up or fails to respond following a system Reset. This could result in a second write in which the bus writes the current content of the write buffer to address of the last I2C access. The failure case is where this unwanted write transfers incorrect data to a critical register. This patch fixes this issue to by following any read or write with a dummy read to a safe register address. A safe register address is one where the contents will not affect the operation of the system. Signed-off-by: Ashish Jangam Signed-off-by: Samuel Ortiz --- include/linux/mfd/da9052/da9052.h | 66 ++++++++++++++++++++++++++++++++++++--- include/linux/mfd/da9052/reg.h | 3 ++ 2 files changed, 65 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index 86dd93de6ff2..786d02eb79d2 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -99,6 +99,9 @@ struct da9052 { u8 chip_id; int chip_irq; + + /* SOC I/O transfer related fixes for DA9052/53 */ + int (*fix_io) (struct da9052 *da9052, unsigned char reg); }; /* ADC API */ @@ -113,32 +116,87 @@ static inline int da9052_reg_read(struct da9052 *da9052, unsigned char reg) ret = regmap_read(da9052->regmap, reg, &val); if (ret < 0) return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + return val; } static inline int da9052_reg_write(struct da9052 *da9052, unsigned char reg, unsigned char val) { - return regmap_write(da9052->regmap, reg, val); + int ret; + + ret = regmap_write(da9052->regmap, reg, val); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_group_read(struct da9052 *da9052, unsigned char reg, unsigned reg_cnt, unsigned char *val) { - return regmap_bulk_read(da9052->regmap, reg, val, reg_cnt); + int ret; + + ret = regmap_bulk_read(da9052->regmap, reg, val, reg_cnt); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_group_write(struct da9052 *da9052, unsigned char reg, unsigned reg_cnt, unsigned char *val) { - return regmap_raw_write(da9052->regmap, reg, val, reg_cnt); + int ret; + + ret = regmap_raw_write(da9052->regmap, reg, val, reg_cnt); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_reg_update(struct da9052 *da9052, unsigned char reg, unsigned char bit_mask, unsigned char reg_val) { - return regmap_update_bits(da9052->regmap, reg, bit_mask, reg_val); + int ret; + + ret = regmap_update_bits(da9052->regmap, reg, bit_mask, reg_val); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } int da9052_device_init(struct da9052 *da9052, u8 chip_id); diff --git a/include/linux/mfd/da9052/reg.h b/include/linux/mfd/da9052/reg.h index b97f7309d7f6..c4dd3a8add21 100644 --- a/include/linux/mfd/da9052/reg.h +++ b/include/linux/mfd/da9052/reg.h @@ -34,6 +34,9 @@ #define DA9052_STATUS_C_REG 3 #define DA9052_STATUS_D_REG 4 +/* PARK REGISTER */ +#define DA9052_PARK_REGISTER DA9052_STATUS_D_REG + /* EVENT REGISTERS */ #define DA9052_EVENT_A_REG 5 #define DA9052_EVENT_B_REG 6 -- cgit v1.2.3 From 83e68189745ad931c2afd45d8ee3303929233e7f Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 14 Nov 2012 09:42:35 +0000 Subject: efi: Make 'efi_enabled' a function to query EFI facilities Originally 'efi_enabled' indicated whether a kernel was booted from EFI firmware. Over time its semantics have changed, and it now indicates whether or not we are booted on an EFI machine with bit-native firmware, e.g. 64-bit kernel with 64-bit firmware. The immediate motivation for this patch is the bug report at, https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 which details how running a platform driver on an EFI machine that is designed to run under BIOS can cause the machine to become bricked. Also, the following report, https://bugzilla.kernel.org/show_bug.cgi?id=47121 details how running said driver can also cause Machine Check Exceptions. Drivers need a new means of detecting whether they're running on an EFI machine, as sadly the expression, if (!efi_enabled) hasn't been a sufficient condition for quite some time. Users actually want to query 'efi_enabled' for different reasons - what they really want access to is the list of available EFI facilities. For instance, the x86 reboot code needs to know whether it can invoke the ResetSystem() function provided by the EFI runtime services, while the ACPI OSL code wants to know whether the EFI config tables were mapped successfully. There are also checks in some of the platform driver code to simply see if they're running on an EFI machine (which would make it a bad idea to do BIOS-y things). This patch is a prereq for the samsung-laptop fix patch. Cc: David Airlie Cc: Corentin Chary Cc: Matthew Garrett Cc: Dave Jiang Cc: Olof Johansson Cc: Peter Jones Cc: Colin Ian King Cc: Steve Langasek Cc: Tony Luck Cc: Konrad Rzeszutek Wilk Cc: Rafael J. Wysocki Cc: Signed-off-by: Matt Fleming Signed-off-by: H. Peter Anvin --- include/linux/efi.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8b84916dc671..7a9498ab3c2d 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -618,18 +618,30 @@ extern int __init efi_setup_pcdp_console(char *); #endif /* - * We play games with efi_enabled so that the compiler will, if possible, remove - * EFI-related code altogether. + * We play games with efi_enabled so that the compiler will, if + * possible, remove EFI-related code altogether. */ +#define EFI_BOOT 0 /* Were we booted from EFI? */ +#define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ +#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ +#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ +#define EFI_MEMMAP 4 /* Can we use EFI memory map? */ +#define EFI_64BIT 5 /* Is the firmware 64-bit? */ + #ifdef CONFIG_EFI # ifdef CONFIG_X86 - extern int efi_enabled; - extern bool efi_64bit; +extern int efi_enabled(int facility); # else -# define efi_enabled 1 +static inline int efi_enabled(int facility) +{ + return 1; +} # endif #else -# define efi_enabled 0 +static inline int efi_enabled(int facility) +{ + return 0; +} #endif /* -- cgit v1.2.3 From 70c37bf97f2a91accba76080db69144f3b69f736 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 28 Jan 2013 23:51:28 +0000 Subject: net: usbnet: prevent buggy devices from killing us MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A device sending 0 length frames as fast as it can has been observed killing the host system due to the resulting memory pressure. Temporarily disable RX skb allocation and URB submission when the current error ratio is high, preventing us from trying to allocate an infinite number of skbs. Reenable as soon as we are finished processing the done queue, allowing the device to continue working after short error bursts. Signed-off-by: Bjørn Mork Acked-by: Oliver Neukum Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 5de7a220e986..0de078d4cdb9 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -33,6 +33,7 @@ struct usbnet { wait_queue_head_t *wait; struct mutex phy_mutex; unsigned char suspend_count; + unsigned char pkt_cnt, pkt_err; /* i/o info: pipes etc */ unsigned in, out; @@ -70,6 +71,7 @@ struct usbnet { # define EVENT_DEV_OPEN 7 # define EVENT_DEVICE_REPORT_IDLE 8 # define EVENT_NO_RUNTIME_PM 9 +# define EVENT_RX_KILL 10 }; static inline struct usb_driver *driver_of(struct usb_interface *intf) -- cgit v1.2.3 From 631b0cfdbd801ceae8762e8d287f15da26792ebe Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Mon, 4 Feb 2013 14:28:48 -0800 Subject: mm: fix wrong comments about anon_vma lock We use rwsem since commit 5a505085f043 ("mm/rmap: Convert the struct anon_vma::mutex to an rwsem"). And most of comments are converted to the new rwsem lock; while just 2 more missed from: $ git grep 'anon_vma->mutex' Signed-off-by: Yuanhan Liu Acked-by: Ingo Molnar Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmu_notifier.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index bc823c4c028b..deca87452528 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -151,7 +151,7 @@ struct mmu_notifier_ops { * Therefore notifier chains can only be traversed when either * * 1. mmap_sem is held. - * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->mutex). + * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->rwsem). * 3. No other concurrent thread can access the list (release) */ struct mmu_notifier { -- cgit v1.2.3 From 91c777d86752b00bb3a1d8efa3d8f7e1264f38a9 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Mon, 4 Feb 2013 14:28:49 -0800 Subject: memcg: fix typo in kmemcg cache walk macro The macro for_each_memcg_cache_index contains a silly yet potentially deadly mistake. Although the macro parameter is _idx, the loop tests are done over i, not _idx. This hasn't generated any problems so far, because all users use i as a loop index. However, while playing with an extension of the code I ended using another loop index and the compiler was quick to complain. Unfortunately, this is not the kind of thing that testing reveals =( Signed-off-by: Glauber Costa Cc: Kamezawa Hiroyuki Cc: Johannes Weiner Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 0108a56f814e..28bd5fa2ff2e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -429,7 +429,7 @@ extern int memcg_limited_groups_array_size; * the slab_mutex must be held when looping through those caches */ #define for_each_memcg_cache_index(_idx) \ - for ((_idx) = 0; i < memcg_limited_groups_array_size; (_idx)++) + for ((_idx) = 0; (_idx) < memcg_limited_groups_array_size; (_idx)++) static inline bool memcg_kmem_enabled(void) { -- cgit v1.2.3 From 9c79330d930b5774aed8eb323daebecedce2e245 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Thu, 7 Feb 2013 16:18:39 +0000 Subject: net: usb: fix regression from FLAG_NOARP code In commit 6509141f9c2ba74df6cc72ec35cd1865276ae3a4 ("usbnet: add new flag FLAG_NOARP for usb net devices"), the newly added flag NOARP was using an already defined value, which broke drivers using flag MULTI_PACKET. Signed-off-by: Lucas Stach Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 0de078d4cdb9..0e5ac93bab10 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -102,7 +102,6 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ #define FLAG_POINTTOPOINT 0x1000 /* possibly use "usb%d" names */ -#define FLAG_NOARP 0x2000 /* device can't do ARP */ /* * Indicates to usbnet, that USB driver accumulates multiple IP packets. @@ -110,6 +109,7 @@ struct driver_info { */ #define FLAG_MULTI_PACKET 0x2000 #define FLAG_RX_ASSEMBLE 0x4000 /* rx packets may span >1 frames */ +#define FLAG_NOARP 0x8000 /* device can't do ARP */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); -- cgit v1.2.3