Commit f31afb50 authored by Jamie Iles's avatar Jamie Iles Committed by Wim Van Sebroeck

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: abd3ac79 ("watchdog: sbsa: Support architecture version 1")
Signed-off-by: default avatarJamie Iles <quic_jiles@quicinc.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarShaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20210903112101.493552-1-quic_jiles@quicinc.comSigned-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 6e7733ef
......@@ -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);
}
/*
......
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