From 6d4341638516bf97b9a34947e0bd95035a8230a5 Mon Sep 17 00:00:00 2001 From: Shrikanth Hegde Date: Fri, 12 Apr 2024 14:50:47 +0530 Subject: powerpc/pseries: Add failure related checks for h_get_mpp and h_get_ppp Couple of Minor fixes: - hcall return values are long. Fix that for h_get_mpp, h_get_ppp and parse_ppp_data - If hcall fails, values set should be at-least zero. It shouldn't be uninitialized values. Fix that for h_get_mpp and h_get_ppp Signed-off-by: Shrikanth Hegde Signed-off-by: Michael Ellerman Link: https://msgid.link/20240412092047.455483-3-sshegde@linux.ibm.com --- arch/powerpc/include/asm/hvcall.h | 2 +- arch/powerpc/platforms/pseries/lpar.c | 6 +++--- arch/powerpc/platforms/pseries/lparcfg.c | 6 +++--- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index a41e542ba94d..51172625fa3a 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -570,7 +570,7 @@ struct hvcall_mpp_data { unsigned long backing_mem; }; -int h_get_mpp(struct hvcall_mpp_data *); +long h_get_mpp(struct hvcall_mpp_data *mpp_data); struct hvcall_mpp_x_data { unsigned long coalesced_bytes; diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 4e9916bb03d7..c1d8bee8f701 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -1886,10 +1886,10 @@ out: * h_get_mpp * H_GET_MPP hcall returns info in 7 parms */ -int h_get_mpp(struct hvcall_mpp_data *mpp_data) +long h_get_mpp(struct hvcall_mpp_data *mpp_data) { - int rc; - unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; + unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + long rc; rc = plpar_hcall9(H_GET_MPP, retbuf); diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c index 679efcf21628..6e7029640c0c 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -113,8 +113,8 @@ struct hvcall_ppp_data { */ static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data) { - unsigned long rc; - unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; + unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + long rc; rc = plpar_hcall9(H_GET_PPP, retbuf); @@ -197,7 +197,7 @@ static void parse_ppp_data(struct seq_file *m) struct hvcall_ppp_data ppp_data; struct device_node *root; const __be32 *perf_level; - int rc; + long rc; rc = h_get_ppp(&ppp_data); if (rc) -- cgit v1.2.3