4.19-stable review patch. If anyone has any objections, please let me know.
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From: Shrikanth Hegde sshegde@linux.ibm.com
[ Upstream commit 6d4341638516bf97b9a34947e0bd95035a8230a5 ]
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 sshegde@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://msgid.link/20240412092047.455483-3-sshegde@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 a0b17f9f1ea4e..2bbf6c01a13d7 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -424,7 +424,7 @@ 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 d660a90616cda..eebaf44e5508e 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -933,10 +933,10 @@ void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf) * 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 d1b338b7dbded..3b82cfe229012 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -114,8 +114,8 @@ 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);
@@ -161,7 +161,7 @@ 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)