diff options
| author | Anton Blanchard <anton@samba.org> | 2013-09-23 04:05:05 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 07:48:51 +0200 |
| commit | 6feff6d4a5e1ac8c48d88860bf705be7709b42af (patch) | |
| tree | 48da9235711b88efc75d25ad903100220bc7e681 /arch/powerpc/platforms/powernv | |
| parent | powerpc/powernv: Don't register exception handlers in little endian mode (diff) | |
| download | linux-6feff6d4a5e1ac8c48d88860bf705be7709b42af.tar.xz linux-6feff6d4a5e1ac8c48d88860bf705be7709b42af.zip | |
powerpc/powernv: More little endian issues in OPAL RTC driver
Sparse caught an issue where opal_set_rtc_time was incorrectly
byteswapping. Also fix a number of sparse warnings.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/powernv')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-rtc.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-rtc.c b/arch/powerpc/platforms/powernv/opal-rtc.c index dbfdba35fcf3..7d07c7e80ec0 100644 --- a/arch/powerpc/platforms/powernv/opal-rtc.c +++ b/arch/powerpc/platforms/powernv/opal-rtc.c @@ -37,10 +37,12 @@ unsigned long __init opal_get_boot_time(void) struct rtc_time tm; u32 y_m_d; u64 h_m_s_ms; + __be32 __y_m_d; + __be64 __h_m_s_ms; long rc = OPAL_BUSY; while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { - rc = opal_rtc_read(&y_m_d, &h_m_s_ms); + rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); if (rc == OPAL_BUSY_EVENT) opal_poll_events(NULL); else @@ -48,8 +50,8 @@ unsigned long __init opal_get_boot_time(void) } if (rc != OPAL_SUCCESS) return 0; - y_m_d = be32_to_cpu(y_m_d); - h_m_s_ms = be64_to_cpu(h_m_s_ms); + y_m_d = be32_to_cpu(__y_m_d); + h_m_s_ms = be64_to_cpu(__h_m_s_ms); opal_to_tm(y_m_d, h_m_s_ms, &tm); return mktime(tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); @@ -60,9 +62,11 @@ void opal_get_rtc_time(struct rtc_time *tm) long rc = OPAL_BUSY; u32 y_m_d; u64 h_m_s_ms; + __be32 __y_m_d; + __be64 __h_m_s_ms; while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { - rc = opal_rtc_read(&y_m_d, &h_m_s_ms); + rc = opal_rtc_read(&__y_m_d, &__h_m_s_ms); if (rc == OPAL_BUSY_EVENT) opal_poll_events(NULL); else @@ -70,8 +74,8 @@ void opal_get_rtc_time(struct rtc_time *tm) } if (rc != OPAL_SUCCESS) return; - y_m_d = be32_to_cpu(y_m_d); - h_m_s_ms = be64_to_cpu(h_m_s_ms); + y_m_d = be32_to_cpu(__y_m_d); + h_m_s_ms = be64_to_cpu(__h_m_s_ms); opal_to_tm(y_m_d, h_m_s_ms, tm); } @@ -90,9 +94,6 @@ int opal_set_rtc_time(struct rtc_time *tm) h_m_s_ms |= ((u64)bin2bcd(tm->tm_min)) << 48; h_m_s_ms |= ((u64)bin2bcd(tm->tm_sec)) << 40; - y_m_d = cpu_to_be32(y_m_d); - h_m_s_ms = cpu_to_be64(h_m_s_ms); - while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { rc = opal_rtc_write(y_m_d, h_m_s_ms); if (rc == OPAL_BUSY_EVENT) |