aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
authorAnton Blanchard <anton@samba.org>2011-11-30 00:23:15 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-12-08 14:02:23 +1100
commit90e8f57cf873188bc5cff445059ddeb72dc51d8c (patch)
tree8c7ec8045bbb3549f35fcaf608c8542a7d7f2d2a /arch/powerpc
parenta934904d8ac2411ca329fc50daa29ab35a8f198b (diff)
downloadlinaro-lsk-90e8f57cf873188bc5cff445059ddeb72dc51d8c.tar.gz
powerpc/xics: Reset the CPPR if H_EOI fails
I have an intermittent kdump fail where the hypervisor fails an H_EOI. As a result our CPPR is never reset to 0xff and we no longer accept interrupts. This patch calls icp_hv_set_cppr to reset the CPPR if H_EOI fails, fixing the kdump fail. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/sysdev/xics/icp-hv.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/xics/icp-hv.c b/arch/powerpc/sysdev/xics/icp-hv.c
index 784b3fc6f07..253dce98c16 100644
--- a/arch/powerpc/sysdev/xics/icp-hv.c
+++ b/arch/powerpc/sysdev/xics/icp-hv.c
@@ -41,23 +41,24 @@ static inline unsigned int icp_hv_get_xirr(unsigned char cppr)
return ret;
}
-static inline void icp_hv_set_xirr(unsigned int value)
+static inline void icp_hv_set_cppr(u8 value)
{
- long rc = plpar_hcall_norets(H_EOI, value);
+ long rc = plpar_hcall_norets(H_CPPR, value);
if (rc != H_SUCCESS) {
- pr_err("%s: bad return code eoi xirr=0x%x returned %ld\n",
+ pr_err("%s: bad return code cppr cppr=0x%x returned %ld\n",
__func__, value, rc);
WARN_ON_ONCE(1);
}
}
-static inline void icp_hv_set_cppr(u8 value)
+static inline void icp_hv_set_xirr(unsigned int value)
{
- long rc = plpar_hcall_norets(H_CPPR, value);
+ long rc = plpar_hcall_norets(H_EOI, value);
if (rc != H_SUCCESS) {
- pr_err("%s: bad return code cppr cppr=0x%x returned %ld\n",
+ pr_err("%s: bad return code eoi xirr=0x%x returned %ld\n",
__func__, value, rc);
WARN_ON_ONCE(1);
+ icp_hv_set_cppr(value >> 24);
}
}