Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f13fd57cd84c06cea6c4b6d61517a4350820a9f
Commit: 6f13fd57cd84c06cea6c4b6d61517a4350820a9f
Parent: 3776541d8a46347a4924353a192c6ce4a3d04e2e
Author: Andrew Vasquez <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 17 09:02:10 2008 -0800
Committer: James Bottomley <[EMAIL PROTECTED]>
CommitDate: Wed Jan 23 11:29:31 2008 -0600
[SCSI] qla2xxx: Wait for FLASH write-protection to complete after a write.
Some flash parts have a slow enable write-protection (WP)
operation whereby subsequent FLASH accesses would fail if the WP
operation had not completed. Software now polls the SPI's
status-register for WP completion.
Signed-off-by: Andrew Vasquez <[EMAIL PROTECTED]>
Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
---
drivers/scsi/qla2xxx/qla_sup.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
index ad2fa01..af16c55 100644
--- a/drivers/scsi/qla2xxx/qla_sup.c
+++ b/drivers/scsi/qla2xxx/qla_sup.c
@@ -550,7 +550,7 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t
*dwptr, uint32_t faddr,
int ret;
uint32_t liter, miter;
uint32_t sec_mask, rest_addr, conf_addr;
- uint32_t fdata, findex ;
+ uint32_t fdata, findex, cnt;
uint8_t man_id, flash_id;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
dma_addr_t optrom_dma;
@@ -690,8 +690,14 @@ qla24xx_write_flash_data(scsi_qla_host_t *ha, uint32_t
*dwptr, uint32_t faddr,
0xff0000) | ((fdata >> 16) & 0xff));
}
- /* Enable flash write-protection. */
+ /* Enable flash write-protection and wait for completion. */
qla24xx_write_flash_dword(ha, flash_conf_to_access_addr(0x101), 0x9c);
+ for (cnt = 300; cnt &&
+ qla24xx_read_flash_dword(ha,
+ flash_conf_to_access_addr(0x005)) & BIT_0;
+ cnt--) {
+ udelay(10);
+ }
/* Disable flash write. */
WRT_REG_DWORD(®->ctrl_status,
-
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