[kernel] powerpc/lpar/debug: Initialize flags before printing debug message

Message ID 20180109055214.32199-1-aik@ozlabs.ru
State New
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Series
  • [kernel] powerpc/lpar/debug: Initialize flags before printing debug message
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Commit Message

Alexey Kardashevskiy Jan. 9, 2018, 5:52 a.m.
With enabled DEBUG, there is a compile error:
"error: ‘flags’ is used uninitialized in this function".

This moves pr_devel() little further where @flags are initialized.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---

/home/aik/p/guest-kernel/arch/powerpc/platforms/pseries/lpar.c: In function ‘pSeries_lpar_hpte_updatepp’:
/home/aik/p/guest-kernel/include/linux/printk.h:320:2: error: ‘flags’ is used uninitialized in this function [-Werror=un
initialized]
  printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
  ^
/home/aik/p/guest-kernel/arch/powerpc/platforms/pseries/lpar.c:304:16: note: ‘flags’ was declared here
  unsigned long flags;
                ^
---
 arch/powerpc/platforms/pseries/lpar.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Patch

diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 0ee4a46..1365424 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -306,14 +306,14 @@  static long pSeries_lpar_hpte_updatepp(unsigned long slot,
 
 	want_v = hpte_encode_avpn(vpn, psize, ssize);
 
+	flags = (newpp & 7) | H_AVPN;
+	if (mmu_has_feature(MMU_FTR_KERNEL_RO))
+		/* Move pp0 into bit 8 (IBM 55) */
+		flags |= (newpp & HPTE_R_PP0) >> 55;
+
 	pr_devel("    update: avpnv=%016lx, hash=%016lx, f=%lx, psize: %d ...",
 		 want_v, slot, flags, psize);
 
-	flags = (newpp & 7) | H_AVPN;
-	if (mmu_has_feature(MMU_FTR_KERNEL_RO))
-		/* Move pp0 into bit 8 (IBM 55) */
-		flags |= (newpp & HPTE_R_PP0) >> 55;
-
 	lpar_rc = plpar_pte_protect(flags, slot, want_v);
 
 	if (lpar_rc == H_NOT_FOUND) {