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authorHerton Ronaldo Krzesinski <herton@mandriva.com.br>2010-03-30 13:35:38 -0300
committerJames Bottomley <James.Bottomley@suse.de>2010-05-01 09:54:22 -0500
commit9a908c1aa4d3898f62e2cb8af6936b16503ab3e6 (patch)
treef22d4a95f76bb3a9bc33198dea23033ec2e044ac
parentbe1066bbcd443a65df312fdecea7e4959adedb45 (diff)
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[SCSI] advansys: fix narrow board error path
Error handling on advansys_board_found is fixed, because it's buggy in the case we have an ASC_NARROW_BOARD set and failure happens on AscInitAsc1000Driver step: it was freeing items of wrong struct in the dvc_var union of struct asc_board, which could lead to an oops in the case we set some of the fields in struct of narrow board as code was choosing to always freeing wide board fields, and not everything was being freed/released properly. Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
-rw-r--r--drivers/scsi/advansys.c50
1 files changed, 36 insertions, 14 deletions
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index 9201afe6560..7f87979da22 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -4724,6 +4724,10 @@ static ushort AscInitMicroCodeVar(ASC_DVC_VAR *asc_dvc)
BUG_ON((unsigned long)asc_dvc->overrun_buf & 7);
asc_dvc->overrun_dma = dma_map_single(board->dev, asc_dvc->overrun_buf,
ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
+ if (dma_mapping_error(board->dev, asc_dvc->overrun_dma)) {
+ warn_code = -ENOMEM;
+ goto err_dma_map;
+ }
phy_addr = cpu_to_le32(asc_dvc->overrun_dma);
AscMemDWordCopyPtrToLram(iop_base, ASCV_OVERRUN_PADDR_D,
(uchar *)&phy_addr, 1);
@@ -4739,14 +4743,23 @@ static ushort AscInitMicroCodeVar(ASC_DVC_VAR *asc_dvc)
AscSetPCAddr(iop_base, ASC_MCODE_START_ADDR);
if (AscGetPCAddr(iop_base) != ASC_MCODE_START_ADDR) {
asc_dvc->err_code |= ASC_IERR_SET_PC_ADDR;
- return warn_code;
+ warn_code = UW_ERR;
+ goto err_mcode_start;
}
if (AscStartChip(iop_base) != 1) {
asc_dvc->err_code |= ASC_IERR_START_STOP_CHIP;
- return warn_code;
+ warn_code = UW_ERR;
+ goto err_mcode_start;
}
return warn_code;
+
+err_mcode_start:
+ dma_unmap_single(board->dev, asc_dvc->overrun_dma,
+ ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
+err_dma_map:
+ asc_dvc->overrun_dma = 0;
+ return warn_code;
}
static ushort AscInitAsc1000Driver(ASC_DVC_VAR *asc_dvc)
@@ -4802,6 +4815,8 @@ static ushort AscInitAsc1000Driver(ASC_DVC_VAR *asc_dvc)
}
release_firmware(fw);
warn_code |= AscInitMicroCodeVar(asc_dvc);
+ if (!asc_dvc->overrun_dma)
+ return warn_code;
asc_dvc->init_state |= ASC_INIT_STATE_END_LOAD_MC;
AscEnableInterrupt(iop_base);
return warn_code;
@@ -7978,9 +7993,10 @@ static int advansys_reset(struct scsi_cmnd *scp)
status = AscInitAsc1000Driver(asc_dvc);
/* Refer to ASC_IERR_* definitions for meaning of 'err_code'. */
- if (asc_dvc->err_code) {
+ if (asc_dvc->err_code || !asc_dvc->overrun_dma) {
scmd_printk(KERN_INFO, scp, "SCSI bus reset error: "
- "0x%x\n", asc_dvc->err_code);
+ "0x%x, status: 0x%x\n", asc_dvc->err_code,
+ status);
ret = FAILED;
} else if (status) {
scmd_printk(KERN_INFO, scp, "SCSI bus reset warning: "
@@ -12311,7 +12327,7 @@ static int __devinit advansys_board_found(struct Scsi_Host *shost,
asc_dvc_varp->overrun_buf = kzalloc(ASC_OVERRUN_BSIZE, GFP_KERNEL);
if (!asc_dvc_varp->overrun_buf) {
ret = -ENOMEM;
- goto err_free_wide_mem;
+ goto err_free_irq;
}
warn_code = AscInitAsc1000Driver(asc_dvc_varp);
@@ -12320,30 +12336,36 @@ static int __devinit advansys_board_found(struct Scsi_Host *shost,
"warn 0x%x, error 0x%x\n",
asc_dvc_varp->init_state, warn_code,
asc_dvc_varp->err_code);
- if (asc_dvc_varp->err_code) {
+ if (!asc_dvc_varp->overrun_dma) {
ret = -ENODEV;
- kfree(asc_dvc_varp->overrun_buf);
+ goto err_free_mem;
}
}
} else {
- if (advansys_wide_init_chip(shost))
+ if (advansys_wide_init_chip(shost)) {
ret = -ENODEV;
+ goto err_free_mem;
+ }
}
- if (ret)
- goto err_free_wide_mem;
-
ASC_DBG_PRT_SCSI_HOST(2, shost);
ret = scsi_add_host(shost, boardp->dev);
if (ret)
- goto err_free_wide_mem;
+ goto err_free_mem;
scsi_scan_host(shost);
return 0;
- err_free_wide_mem:
- advansys_wide_free_mem(boardp);
+ err_free_mem:
+ if (ASC_NARROW_BOARD(boardp)) {
+ if (asc_dvc_varp->overrun_dma)
+ dma_unmap_single(boardp->dev, asc_dvc_varp->overrun_dma,
+ ASC_OVERRUN_BSIZE, DMA_FROM_DEVICE);
+ kfree(asc_dvc_varp->overrun_buf);
+ } else
+ advansys_wide_free_mem(boardp);
+ err_free_irq:
free_irq(boardp->irq, shost);
err_free_dma:
#ifdef CONFIG_ISA