diff options
Diffstat (limited to 'arch/parisc/kernel/syscall.S')
| -rw-r--r-- | arch/parisc/kernel/syscall.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index b29b76b42bb7..d66163492890 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S | |||
| @@ -164,7 +164,7 @@ linux_gateway_entry: | |||
| 164 | #endif | 164 | #endif |
| 165 | STREG %r2, TASK_PT_GR30(%r1) /* ... and save it */ | 165 | STREG %r2, TASK_PT_GR30(%r1) /* ... and save it */ |
| 166 | 166 | ||
| 167 | STREG %r20, TASK_PT_GR20(%r1) | 167 | STREG %r20, TASK_PT_GR20(%r1) /* Syscall number */ |
| 168 | STREG %r21, TASK_PT_GR21(%r1) | 168 | STREG %r21, TASK_PT_GR21(%r1) |
| 169 | STREG %r22, TASK_PT_GR22(%r1) | 169 | STREG %r22, TASK_PT_GR22(%r1) |
| 170 | STREG %r23, TASK_PT_GR23(%r1) /* 4th argument */ | 170 | STREG %r23, TASK_PT_GR23(%r1) /* 4th argument */ |
| @@ -527,6 +527,7 @@ lws_compare_and_swap: | |||
| 527 | We *must* giveup this call and fail. | 527 | We *must* giveup this call and fail. |
| 528 | */ | 528 | */ |
| 529 | ldw 4(%sr2,%r20), %r28 /* Load thread register */ | 529 | ldw 4(%sr2,%r20), %r28 /* Load thread register */ |
| 530 | /* WARNING: If cr27 cycles to the same value we have problems */ | ||
| 530 | mfctl %cr27, %r21 /* Get current thread register */ | 531 | mfctl %cr27, %r21 /* Get current thread register */ |
| 531 | cmpb,<>,n %r21, %r28, cas_lock /* Called recursive? */ | 532 | cmpb,<>,n %r21, %r28, cas_lock /* Called recursive? */ |
| 532 | b lws_exit /* Return error! */ | 533 | b lws_exit /* Return error! */ |