From: James Bottomley Date: Mon, 7 Jul 2008 16:24:06 +0000 (-0500) Subject: [SCSI] mptspi: fix oops in mptspi_dv_renegotiate_work() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=081a5bcb39b455405d58f79bb3c9398a9d4477ed;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [SCSI] mptspi: fix oops in mptspi_dv_renegotiate_work() The problem here is that if the ioc faults too early in the bring up sequence (as it usually does for an irq routing problem), ioc_reset gets called before the scsi host is even allocated. This causes an oops when it later schedules a renegotiation. Fix this by checking ioc->sh before trying to renegotiate. Cc: "Moore, Eric" Cc: Stable Tree Signed-off-by: James Bottomley --- diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c index 25bcfcf36f2e..1effca4e40e1 100644 --- a/drivers/message/fusion/mptspi.c +++ b/drivers/message/fusion/mptspi.c @@ -1266,13 +1266,18 @@ mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd) static int mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) { - struct _MPT_SCSI_HOST *hd = shost_priv(ioc->sh); int rc; rc = mptscsih_ioc_reset(ioc, reset_phase); - if (reset_phase == MPT_IOC_POST_RESET) + /* only try to do a renegotiation if we're properly set up + * if we get an ioc fault on bringup, ioc->sh will be NULL */ + if (reset_phase == MPT_IOC_POST_RESET && + ioc->sh) { + struct _MPT_SCSI_HOST *hd = shost_priv(ioc->sh); + mptspi_dv_renegotiate(hd); + } return rc; }