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| author | Dave Airlie <airlied@redhat.com> | 2011-07-13 08:30:11 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-07-13 08:30:22 +0100 |
| commit | cf056edbbe70393faa6edd2b7859a14467910946 (patch) | |
| tree | ca30ef021f12d1f06e18856a60f815ba63e78f60 /arch/powerpc/sysdev/fsl_rio.c | |
| parent | 58b6542b50ded4243c26c251c0507e5f658642f6 (diff) | |
| parent | 620917de59eeb934b9f8cf35cc2d95c1ac8ed0fc (diff) | |
Merge 3.0-rc7 into drm-core-next
This pulls in all the drm fixes up to this point which are needed
for some -next patches to work.
Diffstat (limited to 'arch/powerpc/sysdev/fsl_rio.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 5b206a2fe17c..b3fd081d56f5 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -283,23 +283,24 @@ static void __iomem *rio_regs_win; #ifdef CONFIG_E500 int fsl_rio_mcheck_exception(struct pt_regs *regs) { - const struct exception_table_entry *entry = NULL; - unsigned long reason = mfspr(SPRN_MCSR); - - if (reason & MCSR_BUS_RBERR) { - reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR)); - if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) { - /* Check if we are prepared to handle this fault */ - entry = search_exception_tables(regs->nip); - if (entry) { - pr_debug("RIO: %s - MC Exception handled\n", - __func__); - out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), - 0); - regs->msr |= MSR_RI; - regs->nip = entry->fixup; - return 1; - } + const struct exception_table_entry *entry; + unsigned long reason; + + if (!rio_regs_win) + return 0; + + reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR)); + if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) { + /* Check if we are prepared to handle this fault */ + entry = search_exception_tables(regs->nip); + if (entry) { + pr_debug("RIO: %s - MC Exception handled\n", + __func__); + out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), + 0); + regs->msr |= MSR_RI; + regs->nip = entry->fixup; + return 1; } } |