linux.git/arch/parisc/include, branch v6.5 Linux kernel source tree parisc: ftrace: Add declaration for ftrace_function_trampoline() 2023-08-10T20:51:54+00:00 Helge Deller deller@gmx.de 2023-08-10T20:51:54+00:00 2794f8ecb483b680610968423179005758a5ce63 Make sparse happy by adding declaration for ftrace_function_trampoline(). Signed-off-by: Helge Deller <deller@gmx.de> 
Make sparse happy by adding declaration for
ftrace_function_trampoline().

Signed-off-by: Helge Deller <deller@gmx.de>
parisc: dma: Add prototype for pcxl_dma_start 2023-08-10T17:12:16+00:00 Helge Deller deller@gmx.de 2023-08-10T17:12:16+00:00 a4c59c9adc5f6b2a6b0115e3c4dc1e5127c2a01b Signed-off-by: Helge Deller <deller@gmx.de> 
Signed-off-by: Helge Deller <deller@gmx.de>
parisc: Fix lightweight spinlock checks to not break futexes 2023-08-10T15:32:09+00:00 Helge Deller deller@gmx.de 2023-08-09T07:21:58+00:00 a0f4b7879f2e14986200747d1b545e5daac8c624 The lightweight spinlock checks verify that a spinlock has either value 0 (spinlock locked) and that not any other bits than in __ARCH_SPIN_LOCK_UNLOCKED_VAL is set. This breaks the current LWS code, which writes the address of the lock into the lock word to unlock it, which was an optimization to save one assembler instruction. Fix it by making spinlock_types.h accessible for asm code, change the LWS spinlock-unlocking code to write __ARCH_SPIN_LOCK_UNLOCKED_VAL into the lock word, and add some missing lightweight spinlock checks to the LWS path. Finally, make the spinlock checks dependend on DEBUG_KERNEL. Noticed-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de> Tested-by: John David Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org # v6.4+ Fixes: 15e64ef6520e ("parisc: Add lightweight spinlock checks") 
The lightweight spinlock checks verify that a spinlock has either value
0 (spinlock locked) and that not any other bits than in
__ARCH_SPIN_LOCK_UNLOCKED_VAL is set.

This breaks the current LWS code, which writes the address of the lock
into the lock word to unlock it, which was an optimization to save one
assembler instruction.

Fix it by making spinlock_types.h accessible for asm code, change the
LWS spinlock-unlocking code to write __ARCH_SPIN_LOCK_UNLOCKED_VAL into
the lock word, and add some missing lightweight spinlock checks to the
LWS path. Finally, make the spinlock checks dependend on DEBUG_KERNEL.

Noticed-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Tested-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # v6.4+
Fixes: 15e64ef6520e ("parisc: Add lightweight spinlock checks")
parisc: unwind: Avoid missing prototype warning for handle_interruption() 2023-07-03T16:56:03+00:00 Helge Deller deller@gmx.de 2023-07-03T16:23:39+00:00 6414b30b39f9d21fcd485aab6e20b7c65f4013d8 Signed-off-by: Helge Deller <deller@gmx.de> 
Signed-off-by: Helge Deller <deller@gmx.de>
parisc: smp: Add declaration for start_cpu_itimer() 2023-07-03T16:25:23+00:00 Helge Deller deller@gmx.de 2023-07-03T16:14:39+00:00 147e17e297563bce7c3acc82b41e24463d9d6a64 Avoid gcc warning about missing prototype for start_cpu_itimer(). Signed-off-by: Helge Deller <deller@gmx.de> 
Avoid gcc warning about missing prototype for start_cpu_itimer().

Signed-off-by: Helge Deller <deller@gmx.de>
parisc: irq: Add irq-related function declarations 2023-06-30T15:14:15+00:00 Helge Deller deller@gmx.de 2023-06-30T14:21:38+00:00 bcfaf17f18f2ae956ec4ba831a9c68859e57cf72 Move function declarations for do_cpu_irq_mask(), timer_interrupt() and ipi_interrupt() to header file. Signed-off-by: Helge Deller <deller@gmx.de> 
Move function declarations for do_cpu_irq_mask(), timer_interrupt() and
ipi_interrupt() to header file.

Signed-off-by: Helge Deller <deller@gmx.de>
parisc: Move init function declarations into header file 2023-06-30T15:14:15+00:00 Helge Deller deller@gmx.de 2023-06-30T11:31:48+00:00 f310f8dd1414d284566ffe47fb8b4379a0d74a64 Clean up the code to not have external function declarations inside the C source files. Reduces warnings when compiled with W=1. Signed-off-by: Helge Deller <deller@gmx.de> 
Clean up the code to not have external function declarations
inside the C source files. Reduces warnings when compiled with W=1.

Signed-off-by: Helge Deller <deller@gmx.de>
sticon/parisc: Allow 64-bit STI calls in PDC firmware abstration 2023-06-30T15:14:14+00:00 Helge Deller deller@gmx.de 2023-05-14T11:23:06+00:00 ededd9d27834ad1f300436c1b78e58ad4fcf5dd7 Some 64-bit machines require us to call the STI ROM in 64-bit mode, e.g. with the VisFXe graphic card. This patch allows drivers to use such 64-bit calling conventions. Tested-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de> 
Some 64-bit machines require us to call the STI ROM in 64-bit mode, e.g.
with the VisFXe graphic card.
This patch allows drivers to use such 64-bit calling conventions.

Tested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
parisc: Add cacheflush() syscall 2023-06-30T15:14:13+00:00 Helge Deller deller@gmx.de 2023-05-26T08:59:15+00:00 c6d96328fecdda16e12f3b3c33f3677f4bcef89f Signed-off-by: Helge Deller <deller@gmx.de> 
Signed-off-by: Helge Deller <deller@gmx.de>
parisc: Check if IRQs are disabled when calling arch_local_irq_restore() 2023-06-30T15:14:13+00:00 Helge Deller deller@gmx.de 2023-05-26T06:33:02+00:00 40c9c62c85a8b7e58350f2d00649f9e0060150b7 A trivial check to check if IRQs are on although they should be off. Signed-off-by: Helge Deller <deller@gmx.de> 
A trivial check to check if IRQs are on although they should be off.

Signed-off-by: Helge Deller <deller@gmx.de>