[PATCH v2 3/5] parisc: fix preempt_count() check in entry.S

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



preempt_count in struct thread_info is unsigned int,
but the entry.S code used LDREG, which generates a 64 bit
load when compiled for 64 bit. Fix this to use an ldw and
also change the condition in the compare one line below
to only compares 32 bits, although ldw zero extends, and
that should work with a 64 bit compare.

Signed-off-by: Sven Schnelle <svens@xxxxxxxxxxxxxx>
---
 arch/parisc/kernel/entry.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 9f939afe6b88..e9e598c18cb0 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -974,8 +974,8 @@ intr_do_preempt:
 
 	/* current_thread_info()->preempt_count */
 	mfctl	%cr30, %r1
-	LDREG	TI_PRE_COUNT(%r1), %r19
-	cmpib,COND(<>)	0, %r19, intr_restore	/* if preempt_count > 0 */
+	ldw	TI_PRE_COUNT(%r1), %r19
+	cmpib,<>	0, %r19, intr_restore	/* if preempt_count > 0 */
 	nop				/* prev insn branched backwards */
 
 	/* check if we interrupted a critical path */
-- 
2.33.0




[Index of Archives]     [Linux SoC]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux