linux-toradex.git/drivers/s390/char, branch v5.18

s390: cleanup timer API use

2022-03-27T20:18:39+00:00

cleanup the s390's use of the timer API
- del_timer() contains timer_pending() condition
- mod_timer(timer, expires) is equivalent to:

	del_timer(timer);
	timer->expires = expires;
	add_timer(timer);

If the timer is inactive it will be activated, using add_timer() on
condition !timer_pending(&private->timer) is redundant.

Just cleanup, no logic change.

Signed-off-by: Yu Liao 
Link: https://lore.kernel.org/r/20220322030057.1243196-1-liaoyu15@huawei.com
Signed-off-by: Heiko Carstens 
Signed-off-by: Vasily Gorbik

s390/tape: use bitwise instead of arithmetic operator for flags

2022-03-27T20:18:38+00:00

This silences the following coccinelle warning:
drivers/s390/char/tape_34xx.c:360:38-39: WARNING: sum of probable bitmasks, consider |

Signed-off-by: Haowen Bai 
Link: https://lore.kernel.org/r/1647334421-29989-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Heiko Carstens 
Signed-off-by: Vasily Gorbik

s390/extable: move EX_TABLE define to asm-extable.h

2022-03-07T23:33:00+00:00

Follow arm64 and riscv and move the EX_TABLE define to asm-extable.h
which is a lot less generic than the current linkage.h.

Also make sure that all files which contain EX_TABLE usages actually
include the new header file. This should make sure that the files
always compile and there won't be any random compile breakage due to
other header file dependencies.

Reviewed-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens 
Signed-off-by: Vasily Gorbik

s390/maccess: fix semantics of memcpy_real() and its callers

2022-02-09T21:56:04+00:00

There is a confusion with regard to the source address of
memcpy_real() and calling functions. While the declared
type for a source assumes a virtual address, in fact it
always called with physical address of the source.

This confusion led to bugs in copy_oldmem_kernel() and
copy_oldmem_user() functions, where __pa() macro applied
mistakenly to physical addresses. It does not lead to a
real issue, since virtual and physical addresses are
currently the same.

Fix both the bugs and memcpy_real() prototype by making
type of source address consistent to the function name
and the way it actually used.

Reviewed-by: Heiko Carstens 
Signed-off-by: Alexander Gordeev 
Signed-off-by: Vasily Gorbik

s390/sclp_sdias: fix sclp_sdias_copy() virtual vs physical address confusion

2022-02-06T22:31:29+00:00

Due to historical reasons sclp_sdias_copy() misuses
the notion of physical vs virtual addresses difference.

Note: this does not fix a bug currently, since virtual
and physical addresses are identical.

Reviewed-by: Heiko Carstens 
Signed-off-by: Alexander Gordeev 
Signed-off-by: Vasily Gorbik

s390: remove invalid email address of Heiko Carstens

2022-02-06T22:31:29+00:00

Remove my old invalid email address which can be found in a couple of
files. Instead of updating it, just remove my contact data completely
from source files.
We have git and other tools which allow to figure out who is responsible
for what with recent contact data.

Signed-off-by: Heiko Carstens 
Signed-off-by: Vasily Gorbik

Merge tag 'tty-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2022-01-12T19:21:52+00:00

Pull tty/serial driver updates from Greg KH:
 "Here is the big set of tty/serial driver updates for 5.17-rc1.

  Nothing major in here, just lots of good updates and fixes, including:

   - more tty core cleanups from Jiri as well as mxser driver cleanups.
     This is the majority of the core diffstat

   - tty documentation updates from Jiri

   - platform_get_irq() updates

   - various serial driver updates for new features and hardware

   - fifo usage for 8250 console, reducing cpu load a lot

   - LED fix for keyboards, long-time bugfix that went through many
     revisions

   - minor cleanups

  All have been in linux-next for a while with no reported problems"

* tag 'tty-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (119 commits)
  serial: core: Keep mctrl register state and cached copy in sync
  serial: stm32: correct loop for dma error handling
  serial: stm32: fix flow control transfer in DMA mode
  serial: stm32: rework TX DMA state condition
  serial: stm32: move tx dma terminate DMA to shutdown
  serial: pl011: Drop redundant DTR/RTS preservation on close/open
  serial: pl011: Drop CR register reset on set_termios
  serial: pl010: Drop CR register reset on set_termios
  serial: liteuart: fix MODULE_ALIAS
  serial: 8250_bcm7271: Fix return error code in case of dma_alloc_coherent() failure
  Revert "serdev: BREAK/FRAME/PARITY/OVERRUN notification prototype V2"
  tty: goldfish: Use platform_get_irq() to get the interrupt
  serdev: BREAK/FRAME/PARITY/OVERRUN notification prototype V2
  tty: serial: meson: Drop the legacy compatible strings and clock code
  serial: pmac_zilog: Use platform_get_irq() to get the interrupt
  serial: bcm63xx: Use platform_get_irq() to get the interrupt
  serial: ar933x: Use platform_get_irq() to get the interrupt
  serial: vt8500: Use platform_get_irq() to get the interrupt
  serial: altera_jtaguart: Use platform_get_irq_optional() to get the interrupt
  serial: pxa: Use platform_get_irq() to get the interrupt
  ...

s390/sclp_sd: use default_groups in kobj_type

2022-01-08T16:44:05+00:00

There are currently 2 ways to create a set of sysfs files for a
kobj_type, through the default_attrs field, and the default_groups
field.  Move the sclp_sd sysfs code to use default_groups field which
has been the preferred way since commit aa30f47cf666 ("kobject: Add
support for default attribute groups to kobj_type") so that we can
soon get rid of the obsolete default_attrs field.

Cc: Vasily Gorbik 
Cc: Christian Borntraeger 
Cc: Alexander Gordeev 
Cc: Peter Oberparleiter 
Signed-off-by: Greg Kroah-Hartman 
Link: https://lore.kernel.org/r/20220106095252.3273905-1-gregkh@linuxfoundation.org
Signed-off-by: Heiko Carstens

s390/sclp: fix memblock_phys_free() vs memblock_free() confusion

2021-12-16T18:58:06+00:00

memblock_phys_free() is used on a virtual address. Fix this by using
memblock_free().

Note: this doesn't fix a bug currently, since virtual and physical
addresses are identical.

Reviewed-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens

s390/vmcp: use page_to_virt instead of page_to_phys

2021-12-06T13:42:25+00:00

Fix wrong usage of page_to_phys/phys_to_page.

Note: this currently doesn't fix a real bug, since virtual addresses
are indentical to physical ones.

Acked-by: Thomas Richter 
Signed-off-by: Heiko Carstens