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| author | Jamie Iles <quic_jiles@quicinc.com> | 2021-09-03 13:21:01 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2021-10-26 20:22:50 +0200 |
| commit | f31afb502c3151855df3ed40f5974c7884c10d14 (patch) | |
| tree | 572ff53e2446f7478f133b3298d11444f6500ec8 /drivers/watchdog | |
| parent | Revert "watchdog: iTCO_wdt: Account for rebooting on second timeout" (diff) | |
| download | linux-f31afb502c3151855df3ed40f5974c7884c10d14.tar.xz linux-f31afb502c3151855df3ed40f5974c7884c10d14.zip | |
watchdog: sbsa: only use 32-bit accessors
SBSA says of the generic watchdog:
All registers are 32 bits in size and should be accessed using 32-bit
reads and writes. If an access size other than 32 bits is used then
the results are IMPLEMENTATION DEFINED.
and for qemu, the implementation will only allow 32-bit accesses
resulting in a synchronous external abort when configuring the watchdog.
Use lo_hi_* accessors rather than a readq/writeq.
Fixes: abd3ac7902fb ("watchdog: sbsa: Support architecture version 1")
Signed-off-by: Jamie Iles <quic_jiles@quicinc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20210903112101.493552-1-quic_jiles@quicinc.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/sbsa_gwdt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c index ee9ff38929eb..6f4319bdbc50 100644 --- a/drivers/watchdog/sbsa_gwdt.c +++ b/drivers/watchdog/sbsa_gwdt.c @@ -130,7 +130,7 @@ static u64 sbsa_gwdt_reg_read(struct sbsa_gwdt *gwdt) if (gwdt->version == 0) return readl(gwdt->control_base + SBSA_GWDT_WOR); else - return readq(gwdt->control_base + SBSA_GWDT_WOR); + return lo_hi_readq(gwdt->control_base + SBSA_GWDT_WOR); } static void sbsa_gwdt_reg_write(u64 val, struct sbsa_gwdt *gwdt) @@ -138,7 +138,7 @@ static void sbsa_gwdt_reg_write(u64 val, struct sbsa_gwdt *gwdt) if (gwdt->version == 0) writel((u32)val, gwdt->control_base + SBSA_GWDT_WOR); else - writeq(val, gwdt->control_base + SBSA_GWDT_WOR); + lo_hi_writeq(val, gwdt->control_base + SBSA_GWDT_WOR); } /* |