diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/68328serial.c | 1 | ||||
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 64 | ||||
| -rw-r--r-- | drivers/tty/serial/bcm63xx_uart.c | 1 | ||||
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 52 | ||||
| -rw-r--r-- | drivers/tty/serial/sunsu.c | 1 | ||||
| -rw-r--r-- | drivers/tty/tty_audit.c | 104 |
6 files changed, 88 insertions, 135 deletions
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c index ef2e08e9b590..5dc9c4bfa66e 100644 --- a/drivers/tty/serial/68328serial.c +++ b/drivers/tty/serial/68328serial.c @@ -14,7 +14,6 @@ * 2.4/2.5 port David McCullough */ -#include <asm/dbg.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/serial.h> diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index b2e9e177a354..8ab70a620919 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -267,7 +267,7 @@ static void pl011_sgbuf_free(struct dma_chan *chan, struct pl011_sgbuf *sg, } } -static void pl011_dma_probe_initcall(struct uart_amba_port *uap) +static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port *uap) { /* DMA is the sole user of the platform data right now */ struct amba_pl011_data *plat = uap->port.dev->platform_data; @@ -281,20 +281,25 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) struct dma_chan *chan; dma_cap_mask_t mask; - /* We need platform data */ - if (!plat || !plat->dma_filter) { - dev_info(uap->port.dev, "no DMA platform data\n"); - return; - } + chan = dma_request_slave_channel(dev, "tx"); - /* Try to acquire a generic DMA engine slave TX channel */ - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - - chan = dma_request_channel(mask, plat->dma_filter, plat->dma_tx_param); if (!chan) { - dev_err(uap->port.dev, "no TX DMA channel!\n"); - return; + /* We need platform data */ + if (!plat || !plat->dma_filter) { + dev_info(uap->port.dev, "no DMA platform data\n"); + return; + } + + /* Try to acquire a generic DMA engine slave TX channel */ + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + chan = dma_request_channel(mask, plat->dma_filter, + plat->dma_tx_param); + if (!chan) { + dev_err(uap->port.dev, "no TX DMA channel!\n"); + return; + } } dmaengine_slave_config(chan, &tx_conf); @@ -304,7 +309,18 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) dma_chan_name(uap->dmatx.chan)); /* Optionally make use of an RX channel as well */ - if (plat->dma_rx_param) { + chan = dma_request_slave_channel(dev, "rx"); + + if (!chan && plat->dma_rx_param) { + chan = dma_request_channel(mask, plat->dma_filter, plat->dma_rx_param); + + if (!chan) { + dev_err(uap->port.dev, "no RX DMA channel!\n"); + return; + } + } + + if (chan) { struct dma_slave_config rx_conf = { .src_addr = uap->port.mapbase + UART01x_DR, .src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, @@ -313,12 +329,6 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) .device_fc = false, }; - chan = dma_request_channel(mask, plat->dma_filter, plat->dma_rx_param); - if (!chan) { - dev_err(uap->port.dev, "no RX DMA channel!\n"); - return; - } - dmaengine_slave_config(chan, &rx_conf); uap->dmarx.chan = chan; @@ -360,6 +370,7 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) struct dma_uap { struct list_head node; struct uart_amba_port *uap; + struct device *dev; }; static LIST_HEAD(pl011_dma_uarts); @@ -370,7 +381,7 @@ static int __init pl011_dma_initcall(void) list_for_each_safe(node, tmp, &pl011_dma_uarts) { struct dma_uap *dmau = list_entry(node, struct dma_uap, node); - pl011_dma_probe_initcall(dmau->uap); + pl011_dma_probe_initcall(dmau->dev, dmau->uap); list_del(node); kfree(dmau); } @@ -379,18 +390,19 @@ static int __init pl011_dma_initcall(void) device_initcall(pl011_dma_initcall); -static void pl011_dma_probe(struct uart_amba_port *uap) +static void pl011_dma_probe(struct device *dev, struct uart_amba_port *uap) { struct dma_uap *dmau = kzalloc(sizeof(struct dma_uap), GFP_KERNEL); if (dmau) { dmau->uap = uap; + dmau->dev = dev; list_add_tail(&dmau->node, &pl011_dma_uarts); } } #else -static void pl011_dma_probe(struct uart_amba_port *uap) +static void pl011_dma_probe(struct device *dev, struct uart_amba_port *uap) { - pl011_dma_probe_initcall(uap); + pl011_dma_probe_initcall(dev, uap); } #endif @@ -1096,7 +1108,7 @@ static inline bool pl011_dma_rx_running(struct uart_amba_port *uap) #else /* Blank functions if the DMA engine is not available */ -static inline void pl011_dma_probe(struct uart_amba_port *uap) +static inline void pl011_dma_probe(struct device *dev, struct uart_amba_port *uap) { } @@ -2155,7 +2167,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) uap->port.ops = &amba_pl011_pops; uap->port.flags = UPF_BOOT_AUTOCONF; uap->port.line = i; - pl011_dma_probe(uap); + pl011_dma_probe(&dev->dev, uap); /* Ensure interrupts from this UART are masked and cleared */ writew(0, uap->port.membase + UART011_IMSC); diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c index 52a3ecd40421..6fa2ae77fffd 100644 --- a/drivers/tty/serial/bcm63xx_uart.c +++ b/drivers/tty/serial/bcm63xx_uart.c @@ -30,7 +30,6 @@ #include <linux/serial.h> #include <linux/serial_core.h> -#include <bcm63xx_clk.h> #include <bcm63xx_irq.h> #include <bcm63xx_regs.h> #include <bcm63xx_io.h> diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index 62e7d3b015a1..4f5f161896a1 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -35,7 +35,7 @@ #include <linux/pinctrl/consumer.h> #include <linux/of_device.h> #include <linux/dma-mapping.h> -#include <linux/fsl/mxs-dma.h> +#include <linux/dmaengine.h> #include <asm/cacheflush.h> @@ -148,11 +148,6 @@ struct mxs_auart_port { struct device *dev; /* for DMA */ - struct mxs_dma_data dma_data; - int dma_channel_rx, dma_channel_tx; - int dma_irq_rx, dma_irq_tx; - int dma_channel; - struct scatterlist tx_sgl; struct dma_chan *tx_dma_chan; void *tx_dma_buf; @@ -440,20 +435,6 @@ static u32 mxs_auart_get_mctrl(struct uart_port *u) return mctrl; } -static bool mxs_auart_dma_filter(struct dma_chan *chan, void *param) -{ - struct mxs_auart_port *s = param; - - if (!mxs_dma_is_apbx(chan)) - return false; - - if (s->dma_channel == chan->chan_id) { - chan->private = &s->dma_data; - return true; - } - return false; -} - static int mxs_auart_dma_prep_rx(struct mxs_auart_port *s); static void dma_rx_callback(void *arg) { @@ -545,21 +526,11 @@ static void mxs_auart_dma_exit(struct mxs_auart_port *s) static int mxs_auart_dma_init(struct mxs_auart_port *s) { - dma_cap_mask_t mask; - if (auart_dma_enabled(s)) return 0; - /* We do not get the right DMA channels. */ - if (s->dma_channel_rx == -1 || s->dma_channel_tx == -1) - return -EINVAL; - /* init for RX */ - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - s->dma_channel = s->dma_channel_rx; - s->dma_data.chan_irq = s->dma_irq_rx; - s->rx_dma_chan = dma_request_channel(mask, mxs_auart_dma_filter, s); + s->rx_dma_chan = dma_request_slave_channel(s->dev, "rx"); if (!s->rx_dma_chan) goto err_out; s->rx_dma_buf = kzalloc(UART_XMIT_SIZE, GFP_KERNEL | GFP_DMA); @@ -567,9 +538,7 @@ static int mxs_auart_dma_init(struct mxs_auart_port *s) goto err_out; /* init for TX */ - s->dma_channel = s->dma_channel_tx; - s->dma_data.chan_irq = s->dma_irq_tx; - s->tx_dma_chan = dma_request_channel(mask, mxs_auart_dma_filter, s); + s->tx_dma_chan = dma_request_slave_channel(s->dev, "tx"); if (!s->tx_dma_chan) goto err_out; s->tx_dma_buf = kzalloc(UART_XMIT_SIZE, GFP_KERNEL | GFP_DMA); @@ -1020,7 +989,6 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s, struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - u32 dma_channel[2]; int ret; if (!np) @@ -1034,20 +1002,8 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s, } s->port.line = ret; - s->dma_irq_rx = platform_get_irq(pdev, 1); - s->dma_irq_tx = platform_get_irq(pdev, 2); + s->flags |= MXS_AUART_DMA_CONFIG; - ret = of_property_read_u32_array(np, "fsl,auart-dma-channel", - dma_channel, 2); - if (ret == 0) { - s->dma_channel_rx = dma_channel[0]; - s->dma_channel_tx = dma_channel[1]; - - s->flags |= MXS_AUART_DMA_CONFIG; - } else { - s->dma_channel_rx = -1; - s->dma_channel_tx = -1; - } return 0; } diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index 451687cb9685..0d8465728473 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -1592,6 +1592,7 @@ static int __init sunsu_init(void) static void __exit sunsu_exit(void) { + platform_driver_unregister(&su_driver); if (sunsu_reg.nr) sunserial_unregister_minors(&sunsu_reg, sunsu_reg.nr); } diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c index 6953dc82850c..a4fdce74f883 100644 --- a/drivers/tty/tty_audit.c +++ b/drivers/tty/tty_audit.c @@ -60,24 +60,22 @@ static void tty_audit_buf_put(struct tty_audit_buf *buf) tty_audit_buf_free(buf); } -static void tty_audit_log(const char *description, struct task_struct *tsk, - kuid_t loginuid, unsigned sessionid, int major, - int minor, unsigned char *data, size_t size) +static void tty_audit_log(const char *description, int major, int minor, + unsigned char *data, size_t size) { struct audit_buffer *ab; + struct task_struct *tsk = current; + uid_t uid = from_kuid(&init_user_ns, task_uid(tsk)); + uid_t loginuid = from_kuid(&init_user_ns, audit_get_loginuid(tsk)); + u32 sessionid = audit_get_sessionid(tsk); ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_TTY); if (ab) { char name[sizeof(tsk->comm)]; - kuid_t uid = task_uid(tsk); - - audit_log_format(ab, "%s pid=%u uid=%u auid=%u ses=%u " - "major=%d minor=%d comm=", description, - tsk->pid, - from_kuid(&init_user_ns, uid), - from_kuid(&init_user_ns, loginuid), - sessionid, - major, minor); + + audit_log_format(ab, "%s pid=%u uid=%u auid=%u ses=%u major=%d" + " minor=%d comm=", description, tsk->pid, uid, + loginuid, sessionid, major, minor); get_task_comm(name, tsk); audit_log_untrustedstring(ab, name); audit_log_format(ab, " data="); @@ -90,11 +88,9 @@ static void tty_audit_log(const char *description, struct task_struct *tsk, * tty_audit_buf_push - Push buffered data out * * Generate an audit message from the contents of @buf, which is owned by - * @tsk with @loginuid. @buf->mutex must be locked. + * the current task. @buf->mutex must be locked. */ -static void tty_audit_buf_push(struct task_struct *tsk, kuid_t loginuid, - unsigned int sessionid, - struct tty_audit_buf *buf) +static void tty_audit_buf_push(struct tty_audit_buf *buf) { if (buf->valid == 0) return; @@ -102,25 +98,11 @@ static void tty_audit_buf_push(struct task_struct *tsk, kuid_t loginuid, buf->valid = 0; return; } - tty_audit_log("tty", tsk, loginuid, sessionid, buf->major, buf->minor, - buf->data, buf->valid); + tty_audit_log("tty", buf->major, buf->minor, buf->data, buf->valid); buf->valid = 0; } /** - * tty_audit_buf_push_current - Push buffered data out - * - * Generate an audit message from the contents of @buf, which is owned by - * the current task. @buf->mutex must be locked. - */ -static void tty_audit_buf_push_current(struct tty_audit_buf *buf) -{ - kuid_t auid = audit_get_loginuid(current); - unsigned int sessionid = audit_get_sessionid(current); - tty_audit_buf_push(current, auid, sessionid, buf); -} - -/** * tty_audit_exit - Handle a task exit * * Make sure all buffered data is written out and deallocate the buffer. @@ -130,15 +112,13 @@ void tty_audit_exit(void) { struct tty_audit_buf *buf; - spin_lock_irq(¤t->sighand->siglock); buf = current->signal->tty_audit_buf; current->signal->tty_audit_buf = NULL; - spin_unlock_irq(¤t->sighand->siglock); if (!buf) return; mutex_lock(&buf->mutex); - tty_audit_buf_push_current(buf); + tty_audit_buf_push(buf); mutex_unlock(&buf->mutex); tty_audit_buf_put(buf); @@ -151,9 +131,8 @@ void tty_audit_exit(void) */ void tty_audit_fork(struct signal_struct *sig) { - spin_lock_irq(¤t->sighand->siglock); sig->audit_tty = current->signal->audit_tty; - spin_unlock_irq(¤t->sighand->siglock); + sig->audit_tty_log_passwd = current->signal->audit_tty_log_passwd; } /** @@ -163,20 +142,21 @@ void tty_audit_tiocsti(struct tty_struct *tty, char ch) { struct tty_audit_buf *buf; int major, minor, should_audit; + unsigned long flags; - spin_lock_irq(¤t->sighand->siglock); + spin_lock_irqsave(¤t->sighand->siglock, flags); should_audit = current->signal->audit_tty; buf = current->signal->tty_audit_buf; if (buf) atomic_inc(&buf->count); - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irqrestore(¤t->sighand->siglock, flags); major = tty->driver->major; minor = tty->driver->minor_start + tty->index; if (buf) { mutex_lock(&buf->mutex); if (buf->major == major && buf->minor == minor) - tty_audit_buf_push_current(buf); + tty_audit_buf_push(buf); mutex_unlock(&buf->mutex); tty_audit_buf_put(buf); } @@ -187,24 +167,20 @@ void tty_audit_tiocsti(struct tty_struct *tty, char ch) auid = audit_get_loginuid(current); sessionid = audit_get_sessionid(current); - tty_audit_log("ioctl=TIOCSTI", current, auid, sessionid, major, - minor, &ch, 1); + tty_audit_log("ioctl=TIOCSTI", major, minor, &ch, 1); } } /** - * tty_audit_push_task - Flush task's pending audit data - * @tsk: task pointer - * @loginuid: sender login uid - * @sessionid: sender session id + * tty_audit_push_current - Flush current's pending audit data * - * Called with a ref on @tsk held. Try to lock sighand and get a - * reference to the tty audit buffer if available. + * Try to lock sighand and get a reference to the tty audit buffer if available. * Flush the buffer or return an appropriate error code. */ -int tty_audit_push_task(struct task_struct *tsk, kuid_t loginuid, u32 sessionid) +int tty_audit_push_current(void) { struct tty_audit_buf *buf = ERR_PTR(-EPERM); + struct task_struct *tsk = current; unsigned long flags; if (!lock_task_sighand(tsk, &flags)) @@ -225,7 +201,7 @@ int tty_audit_push_task(struct task_struct *tsk, kuid_t loginuid, u32 sessionid) return PTR_ERR(buf); mutex_lock(&buf->mutex); - tty_audit_buf_push(tsk, loginuid, sessionid, buf); + tty_audit_buf_push(buf); mutex_unlock(&buf->mutex); tty_audit_buf_put(buf); @@ -243,10 +219,11 @@ static struct tty_audit_buf *tty_audit_buf_get(struct tty_struct *tty, unsigned icanon) { struct tty_audit_buf *buf, *buf2; + unsigned long flags; buf = NULL; buf2 = NULL; - spin_lock_irq(¤t->sighand->siglock); + spin_lock_irqsave(¤t->sighand->siglock, flags); if (likely(!current->signal->audit_tty)) goto out; buf = current->signal->tty_audit_buf; @@ -254,7 +231,7 @@ static struct tty_audit_buf *tty_audit_buf_get(struct tty_struct *tty, atomic_inc(&buf->count); goto out; } - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irqrestore(¤t->sighand->siglock, flags); buf2 = tty_audit_buf_alloc(tty->driver->major, tty->driver->minor_start + tty->index, @@ -264,7 +241,7 @@ static struct tty_audit_buf *tty_audit_buf_get(struct tty_struct *tty, return NULL; } - spin_lock_irq(¤t->sighand->siglock); + spin_lock_irqsave(¤t->sighand->siglock, flags); if (!current->signal->audit_tty) goto out; buf = current->signal->tty_audit_buf; @@ -276,7 +253,7 @@ static struct tty_audit_buf *tty_audit_buf_get(struct tty_struct *tty, atomic_inc(&buf->count); /* Fall through */ out: - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irqrestore(¤t->sighand->siglock, flags); if (buf2) tty_audit_buf_free(buf2); return buf; @@ -292,10 +269,18 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, { struct tty_audit_buf *buf; int major, minor; + int audit_log_tty_passwd; + unsigned long flags; if (unlikely(size == 0)) return; + spin_lock_irqsave(¤t->sighand->siglock, flags); + audit_log_tty_passwd = current->signal->audit_tty_log_passwd; + spin_unlock_irqrestore(¤t->sighand->siglock, flags); + if (!audit_log_tty_passwd && icanon && !L_ECHO(tty)) + return; + if (tty->driver->type == TTY_DRIVER_TYPE_PTY && tty->driver->subtype == PTY_TYPE_MASTER) return; @@ -309,7 +294,7 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, minor = tty->driver->minor_start + tty->index; if (buf->major != major || buf->minor != minor || buf->icanon != icanon) { - tty_audit_buf_push_current(buf); + tty_audit_buf_push(buf); buf->major = major; buf->minor = minor; buf->icanon = icanon; @@ -325,7 +310,7 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, data += run; size -= run; if (buf->valid == N_TTY_BUF_SIZE) - tty_audit_buf_push_current(buf); + tty_audit_buf_push(buf); } while (size != 0); mutex_unlock(&buf->mutex); tty_audit_buf_put(buf); @@ -339,16 +324,17 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, void tty_audit_push(struct tty_struct *tty) { struct tty_audit_buf *buf; + unsigned long flags; - spin_lock_irq(¤t->sighand->siglock); + spin_lock_irqsave(¤t->sighand->siglock, flags); if (likely(!current->signal->audit_tty)) { - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irqrestore(¤t->sighand->siglock, flags); return; } buf = current->signal->tty_audit_buf; if (buf) atomic_inc(&buf->count); - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irqrestore(¤t->sighand->siglock, flags); if (buf) { int major, minor; @@ -357,7 +343,7 @@ void tty_audit_push(struct tty_struct *tty) minor = tty->driver->minor_start + tty->index; mutex_lock(&buf->mutex); if (buf->major == major && buf->minor == minor) - tty_audit_buf_push_current(buf); + tty_audit_buf_push(buf); mutex_unlock(&buf->mutex); tty_audit_buf_put(buf); } |