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authorEric Moore <eric.moore@lsil.com>2006-04-26 03:38:58 +0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-05-03 21:11:51 +0400
commit6e1cad02763edec83dba8559d4be8d518a6562a5 (patch)
treeb181e0af7880ded4e7a8e3a3f1841f441b92bd9e /drivers/message
parentec448a0a361ce3fa97a32a5c267a680163ffe8c5 (diff)
downloadlinux-6e1cad02763edec83dba8559d4be8d518a6562a5.tar.xz
[SCSI] mptspi: revalidate negotiation parameters after host reset and resume
This is a bug fix for mptspi driver, where after a host reset or resume, we revalidate the negotiation parameters for all devices. This bug was introduced when the driver was ported to use the spi transport layer. 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/mptspi.c68
1 files changed, 66 insertions, 2 deletions
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 09c745b19cc8..f2a4d382ea19 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -783,6 +783,70 @@ static struct pci_device_id mptspi_pci_table[] = {
};
MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
+
+/*
+ * renegotiate for a given target
+ */
+static void
+mptspi_dv_renegotiate_work(void *data)
+{
+ struct work_queue_wrapper *wqw = (struct work_queue_wrapper *)data;
+ struct _MPT_SCSI_HOST *hd = wqw->hd;
+ struct scsi_device *sdev;
+
+ kfree(wqw);
+
+ shost_for_each_device(sdev, hd->ioc->sh)
+ mptspi_dv_device(hd, sdev);
+}
+
+static void
+mptspi_dv_renegotiate(struct _MPT_SCSI_HOST *hd)
+{
+ struct work_queue_wrapper *wqw = kmalloc(sizeof(*wqw), GFP_ATOMIC);
+
+ if (!wqw)
+ return;
+
+ INIT_WORK(&wqw->work, mptspi_dv_renegotiate_work, wqw);
+ wqw->hd = hd;
+
+ schedule_work(&wqw->work);
+}
+
+/*
+ * spi module reset handler
+ */
+static int
+mptspi_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
+{
+ struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
+ int rc;
+
+ rc = mptscsih_ioc_reset(ioc, reset_phase);
+
+ if (reset_phase == MPT_IOC_POST_RESET)
+ mptspi_dv_renegotiate(hd);
+
+ return rc;
+}
+
+/*
+ * spi module resume handler
+ */
+static int
+mptspi_resume(struct pci_dev *pdev)
+{
+ MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
+ struct _MPT_SCSI_HOST *hd = (struct _MPT_SCSI_HOST *)ioc->sh->hostdata;
+ int rc;
+
+ rc = mptscsih_resume(pdev);
+ mptspi_dv_renegotiate(hd);
+
+ return rc;
+}
+
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
@@ -1032,7 +1096,7 @@ static struct pci_driver mptspi_driver = {
.shutdown = mptscsih_shutdown,
#ifdef CONFIG_PM
.suspend = mptscsih_suspend,
- .resume = mptscsih_resume,
+ .resume = mptspi_resume,
#endif
};
@@ -1061,7 +1125,7 @@ mptspi_init(void)
": Registered for IOC event notifications\n"));
}
- if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
+ if (mpt_reset_register(mptspiDoneCtx, mptspi_ioc_reset) == 0) {
dprintk((KERN_INFO MYNAM
": Registered for IOC reset notifications\n"));
}