diff options
-rw-r--r-- | drivers/scsi/ips.c | 50 |
1 files changed, 8 insertions, 42 deletions
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c index 62640366845a..cc4f44fcabb6 100644 --- a/drivers/scsi/ips.c +++ b/drivers/scsi/ips.c | |||
@@ -3502,28 +3502,11 @@ ips_send_wait(ips_ha_t * ha, ips_scb_t * scb, int timeout, int intr) | |||
3502 | static void | 3502 | static void |
3503 | ips_scmd_buf_write(struct scsi_cmnd *scmd, void *data, unsigned int count) | 3503 | ips_scmd_buf_write(struct scsi_cmnd *scmd, void *data, unsigned int count) |
3504 | { | 3504 | { |
3505 | int i; | 3505 | unsigned long flags; |
3506 | unsigned int min_cnt, xfer_cnt; | ||
3507 | char *cdata = (char *) data; | ||
3508 | unsigned char *buffer; | ||
3509 | unsigned long flags; | ||
3510 | struct scatterlist *sg = scsi_sglist(scmd); | ||
3511 | |||
3512 | for (i = 0, xfer_cnt = 0; | ||
3513 | (i < scsi_sg_count(scmd)) && (xfer_cnt < count); | ||
3514 | i++, sg = sg_next(sg)) { | ||
3515 | min_cnt = min(count - xfer_cnt, sg->length); | ||
3516 | |||
3517 | /* kmap_atomic() ensures addressability of the data buffer.*/ | ||
3518 | /* local_irq_save() protects the KM_IRQ0 address slot. */ | ||
3519 | local_irq_save(flags); | ||
3520 | buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; | ||
3521 | memcpy(buffer, &cdata[xfer_cnt], min_cnt); | ||
3522 | kunmap_atomic(buffer - sg->offset, KM_IRQ0); | ||
3523 | local_irq_restore(flags); | ||
3524 | 3506 | ||
3525 | xfer_cnt += min_cnt; | 3507 | local_irq_save(flags); |
3526 | } | 3508 | scsi_sg_copy_from_buffer(scmd, data, count); |
3509 | local_irq_restore(flags); | ||
3527 | } | 3510 | } |
3528 | 3511 | ||
3529 | /****************************************************************************/ | 3512 | /****************************************************************************/ |
@@ -3536,28 +3519,11 @@ ips_scmd_buf_write(struct scsi_cmnd *scmd, void *data, unsigned int count) | |||
3536 | static void | 3519 | static void |
3537 | ips_scmd_buf_read(struct scsi_cmnd *scmd, void *data, unsigned int count) | 3520 | ips_scmd_buf_read(struct scsi_cmnd *scmd, void *data, unsigned int count) |
3538 | { | 3521 | { |
3539 | int i; | 3522 | unsigned long flags; |
3540 | unsigned int min_cnt, xfer_cnt; | ||
3541 | char *cdata = (char *) data; | ||
3542 | unsigned char *buffer; | ||
3543 | unsigned long flags; | ||
3544 | struct scatterlist *sg = scsi_sglist(scmd); | ||
3545 | |||
3546 | for (i = 0, xfer_cnt = 0; | ||
3547 | (i < scsi_sg_count(scmd)) && (xfer_cnt < count); | ||
3548 | i++, sg = sg_next(sg)) { | ||
3549 | min_cnt = min(count - xfer_cnt, sg->length); | ||
3550 | |||
3551 | /* kmap_atomic() ensures addressability of the data buffer.*/ | ||
3552 | /* local_irq_save() protects the KM_IRQ0 address slot. */ | ||
3553 | local_irq_save(flags); | ||
3554 | buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; | ||
3555 | memcpy(&cdata[xfer_cnt], buffer, min_cnt); | ||
3556 | kunmap_atomic(buffer - sg->offset, KM_IRQ0); | ||
3557 | local_irq_restore(flags); | ||
3558 | 3523 | ||
3559 | xfer_cnt += min_cnt; | 3524 | local_irq_save(flags); |
3560 | } | 3525 | scsi_sg_copy_to_buffer(scmd, data, count); |
3526 | local_irq_restore(flags); | ||
3561 | } | 3527 | } |
3562 | 3528 | ||
3563 | /****************************************************************************/ | 3529 | /****************************************************************************/ |