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author | Nayna Jain <nayna@linux.ibm.com> | 2024-04-18 06:12:30 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-17 13:14:35 +0300 |
commit | 57fae373e987e6995c2b4bb9270d2aa7502b79d4 (patch) | |
tree | a079c6f2fdb26e25563f153a0f2387fa3cf4ac0a | |
parent | 9708e5081cfc4f085690294163389bcf82655f90 (diff) | |
download | linux-57fae373e987e6995c2b4bb9270d2aa7502b79d4.tar.xz |
powerpc/pseries: make max polling consistent for longer H_CALLs
[ Upstream commit 784354349d2c988590c63a5a001ca37b2a6d4da1 ]
Currently, plpks_confirm_object_flushed() function polls for 5msec in
total instead of 5sec.
Keep max polling time consistent for all the H_CALLs, which take longer
than expected, to be 5sec. Also, make use of fsleep() everywhere to
insert delay.
Reported-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Fixes: 2454a7af0f2a ("powerpc/pseries: define driver for Platform KeyStore")
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240418031230.170954-1-nayna@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r-- | arch/powerpc/include/asm/plpks.h | 5 | ||||
-rw-r--r-- | arch/powerpc/platforms/pseries/plpks.c | 10 |
2 files changed, 7 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/plpks.h b/arch/powerpc/include/asm/plpks.h index 23b77027c916..7a84069759b0 100644 --- a/arch/powerpc/include/asm/plpks.h +++ b/arch/powerpc/include/asm/plpks.h @@ -44,9 +44,8 @@ #define PLPKS_MAX_DATA_SIZE 4000 // Timeouts for PLPKS operations -#define PLPKS_MAX_TIMEOUT 5000 // msec -#define PLPKS_FLUSH_SLEEP 10 // msec -#define PLPKS_FLUSH_SLEEP_RANGE 400 +#define PLPKS_MAX_TIMEOUT (5 * USEC_PER_SEC) +#define PLPKS_FLUSH_SLEEP 10000 // usec struct plpks_var { char *component; diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c index febe18f251d0..4a595493d28a 100644 --- a/arch/powerpc/platforms/pseries/plpks.c +++ b/arch/powerpc/platforms/pseries/plpks.c @@ -415,8 +415,7 @@ static int plpks_confirm_object_flushed(struct label *label, break; } - usleep_range(PLPKS_FLUSH_SLEEP, - PLPKS_FLUSH_SLEEP + PLPKS_FLUSH_SLEEP_RANGE); + fsleep(PLPKS_FLUSH_SLEEP); timeout = timeout + PLPKS_FLUSH_SLEEP; } while (timeout < PLPKS_MAX_TIMEOUT); @@ -464,9 +463,10 @@ int plpks_signed_update_var(struct plpks_var *var, u64 flags) continuetoken = retbuf[0]; if (pseries_status_to_err(rc) == -EBUSY) { - int delay_ms = get_longbusy_msecs(rc); - mdelay(delay_ms); - timeout += delay_ms; + int delay_us = get_longbusy_msecs(rc) * 1000; + + fsleep(delay_us); + timeout += delay_us; } rc = pseries_status_to_err(rc); } while (rc == -EBUSY && timeout < PLPKS_MAX_TIMEOUT); |