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| author |   Nicholas Piggin <npiggin@gmail.com> | 2018-05-01 00:55:48 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-07-24 22:09:56 +1000 |
| commit | d2a2262e686ce7a27776add27751f925ceda856f (patch) | |
| tree | 4dff5a937882a3c9d596eacbcf3eae31ab8c94b8 /arch/powerpc/include/asm/opal.h | |
| parent | powerpc/powernv: opal-kmsg use flush fallback from console code (diff) | |
| download | linux-dev-d2a2262e686ce7a27776add27751f925ceda856f.tar.xz linux-dev-d2a2262e686ce7a27776add27751f925ceda856f.zip | |
powerpc/powernv: Implement and use opal_flush_console
A new console flushing firmware API was introduced to replace event
polling loops, and implemented in opal-kmsg with affddff69c55e
("powerpc/powernv: Add a kmsg_dumper that flushes console output on
panic"), to flush the console in the panic path.
The OPAL console driver has other situations where interrupts are off
and it needs to flush the console synchronously. These still use a
polling loop.
So move the opal-kmsg flush code to opal_flush_console, and use the
new function in opal-kmsg and opal_put_chars.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index e1b2910c6e81..33ab95a4ac0f 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -305,6 +305,7 @@ extern void opal_configure_cores(void); extern int opal_get_chars(uint32_t vtermno, char *buf, int count); extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len); +extern int opal_flush_console(uint32_t vtermno); extern void hvc_opal_init_early(void); |