From: "Moore, Eric" 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 Signed-off-by: Andrew Morton --- drivers/message/fusion/mptbase.c | 14 ++++++++++---- 1 files changed, 10 insertions(+), 4 deletions(-) diff -puN drivers/message/fusion/mptbase.c~fusion-unloading-the-driver-results-in-panic-fix drivers/message/fusion/mptbase.c --- devel/drivers/message/fusion/mptbase.c~fusion-unloading-the-driver-results-in-panic-fix 2006-01-23 15:39:26.000000000 -0800 +++ devel-akpm/drivers/message/fusion/mptbase.c 2006-01-23 15:39:26.000000000 -0800 @@ -178,7 +178,7 @@ static void mpt_get_fw_exp_ver(char *buf 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); } @@ -1495,6 +1495,8 @@ mpt_attach(struct pci_dev *pdev, const s free_irq(ioc->pci_irq, ioc); if (mpt_msi_enable == 1) pci_disable_msi(pdev); + if (ioc->alt_ioc) + ioc->alt_ioc->alt_ioc = NULL; iounmap(mem); kfree(ioc); pci_set_drvdata(pdev, NULL); @@ -2171,6 +2173,10 @@ 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); } @@ -6207,7 +6213,7 @@ mpt_fc_log_info(MPT_ADAPTER *ioc, u32 lo /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ /* - * 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 @@ -6215,7 +6221,7 @@ mpt_fc_log_info(MPT_ADAPTER *ioc, u32 lo * 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"; _