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authorMoore, Eric <Eric.Moore@lsil.com>2006-01-18 03:06:23 +0300
committerJames Bottomley <jejb@mulgrave.(none)>2006-01-31 23:40:03 +0300
commit335a94124470dd5be6c42378d1b7f7af9a80919e (patch)
tree1737368059803a88caf0367800593e392ab46777 /drivers/message
parent23f236ed2748fca0bcba304f4f9e3eacda51e91c (diff)
downloadlinux-335a94124470dd5be6c42378d1b7f7af9a80919e.tar.xz
[SCSI] fusion: unloading the driver results in panic - fix
The ioc->alt_ioc->alt_ioc pointer is not getting cleared during driver unload time. This dangling pointer can result in panic in certain circumstances, such as error recovery, or firmware download in flashless environments. This only impacts dual functions controllers, such as 1030. Please apply. This patch also includes a small cosmetic name change for mpt_spi_log_info. Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/message')
-rw-r--r--drivers/message/fusion/mptbase.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index e352b000c7d1..9a2c7605d49c 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -178,7 +178,7 @@ static void mpt_get_fw_exp_ver(char *buf, MPT_ADAPTER *ioc);
static int ProcessEventNotification(MPT_ADAPTER *ioc, EventNotificationReply_t *evReply, int *evHandlers);
static void mpt_sp_ioc_info(MPT_ADAPTER *ioc, u32 ioc_status, MPT_FRAME_HDR *mf);
static void mpt_fc_log_info(MPT_ADAPTER *ioc, u32 log_info);
-static void mpt_sp_log_info(MPT_ADAPTER *ioc, u32 log_info);
+static void mpt_spi_log_info(MPT_ADAPTER *ioc, u32 log_info);
static void mpt_sas_log_info(MPT_ADAPTER *ioc, u32 log_info);
/* module entry point */
@@ -317,7 +317,7 @@ mpt_reply(MPT_ADAPTER *ioc, u32 pa)
if (ioc->bus_type == FC)
mpt_fc_log_info(ioc, log_info);
else if (ioc->bus_type == SPI)
- mpt_sp_log_info(ioc, log_info);
+ mpt_spi_log_info(ioc, log_info);
else if (ioc->bus_type == SAS)
mpt_sas_log_info(ioc, log_info);
}
@@ -1492,6 +1492,8 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
free_irq(ioc->pci_irq, ioc);
if (mpt_msi_enable)
pci_disable_msi(pdev);
+ if (ioc->alt_ioc)
+ ioc->alt_ioc->alt_ioc = NULL;
iounmap(mem);
kfree(ioc);
pci_set_drvdata(pdev, NULL);
@@ -2168,6 +2170,10 @@ mpt_adapter_dispose(MPT_ADAPTER *ioc)
sz_last = ioc->alloc_total;
dprintk((KERN_INFO MYNAM ": %s: free'd %d of %d bytes\n",
ioc->name, sz_first-sz_last+(int)sizeof(*ioc), sz_first));
+
+ if (ioc->alt_ioc)
+ ioc->alt_ioc->alt_ioc = NULL;
+
kfree(ioc);
}
@@ -6204,7 +6210,7 @@ mpt_fc_log_info(MPT_ADAPTER *ioc, u32 log_info)
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
- * mpt_sp_log_info - Log information returned from SCSI Parallel IOC.
+ * mpt_spi_log_info - Log information returned from SCSI Parallel IOC.
* @ioc: Pointer to MPT_ADAPTER structure
* @mr: Pointer to MPT reply frame
* @log_info: U32 LogInfo word from the IOC
@@ -6212,7 +6218,7 @@ mpt_fc_log_info(MPT_ADAPTER *ioc, u32 log_info)
* Refer to lsi/sp_log.h.
*/
static void
-mpt_sp_log_info(MPT_ADAPTER *ioc, u32 log_info)
+mpt_spi_log_info(MPT_ADAPTER *ioc, u32 log_info)
{
u32 info = log_info & 0x00FF0000;
char *desc = "unknown";