diff options
Diffstat (limited to 'drivers/scsi/ips.c')
| -rw-r--r-- | drivers/scsi/ips.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c index 16419aeec02d..bb206509265e 100644 --- a/drivers/scsi/ips.c +++ b/drivers/scsi/ips.c @@ -1499,17 +1499,16 @@ static int ips_is_passthru(struct scsi_cmnd *SC) struct scatterlist *sg = scsi_sglist(SC); char *buffer; - /* kmap_atomic() ensures addressability of the user buffer.*/ /* local_irq_save() protects the KM_IRQ0 address slot. */ local_irq_save(flags); - buffer = kmap_atomic(sg_page(sg)) + sg->offset; - if (buffer && buffer[0] == 'C' && buffer[1] == 'O' && - buffer[2] == 'P' && buffer[3] == 'P') { - kunmap_atomic(buffer - sg->offset); + buffer = kmap_local_page(sg_page(sg)) + sg->offset; + if (buffer && buffer[0] == 'C' && buffer[1] == 'O' && + buffer[2] == 'P' && buffer[3] == 'P') { + kunmap_local(buffer); local_irq_restore(flags); return 1; } - kunmap_atomic(buffer - sg->offset); + kunmap_local(buffer); local_irq_restore(flags); } return 0; |