Commit 97af50f6 authored by James Bottomley's avatar James Bottomley Committed by James Bottomley

[SCSI] aic7xxx/aic79xx: fix module removal path not to panic

In these drivers, scsi_remove_host() is called too late, at the point
it is called, the driver has already shut down too far to accept any
I/O that the shutdown might generate.  Any generated I/O actually
triggers a panic.

Fix this by calling scsi_remove_host() as early as possible and not
calling scsi_host_put() until just before we kfree the ahc_softc.
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 9e70592f
...@@ -112,6 +112,9 @@ aic7770_remove(struct device *dev) ...@@ -112,6 +112,9 @@ aic7770_remove(struct device *dev)
struct ahc_softc *ahc = dev_get_drvdata(dev); struct ahc_softc *ahc = dev_get_drvdata(dev);
u_long s; u_long s;
if (ahc->platform_data && ahc->platform_data->host)
scsi_remove_host(ahc->platform_data->host);
ahc_lock(ahc, &s); ahc_lock(ahc, &s);
ahc_intr_enable(ahc, FALSE); ahc_intr_enable(ahc, FALSE);
ahc_unlock(ahc, &s); ahc_unlock(ahc, &s);
......
...@@ -1192,11 +1192,6 @@ ahd_platform_free(struct ahd_softc *ahd) ...@@ -1192,11 +1192,6 @@ ahd_platform_free(struct ahd_softc *ahd)
int i, j; int i, j;
if (ahd->platform_data != NULL) { if (ahd->platform_data != NULL) {
if (ahd->platform_data->host != NULL) {
scsi_remove_host(ahd->platform_data->host);
scsi_host_put(ahd->platform_data->host);
}
/* destroy all of the device and target objects */ /* destroy all of the device and target objects */
for (i = 0; i < AHD_NUM_TARGETS; i++) { for (i = 0; i < AHD_NUM_TARGETS; i++) {
starget = ahd->platform_data->starget[i]; starget = ahd->platform_data->starget[i];
...@@ -1226,6 +1221,9 @@ ahd_platform_free(struct ahd_softc *ahd) ...@@ -1226,6 +1221,9 @@ ahd_platform_free(struct ahd_softc *ahd)
release_mem_region(ahd->platform_data->mem_busaddr, release_mem_region(ahd->platform_data->mem_busaddr,
0x1000); 0x1000);
} }
if (ahd->platform_data->host)
scsi_host_put(ahd->platform_data->host);
free(ahd->platform_data, M_DEVBUF); free(ahd->platform_data, M_DEVBUF);
} }
} }
......
...@@ -95,6 +95,9 @@ ahd_linux_pci_dev_remove(struct pci_dev *pdev) ...@@ -95,6 +95,9 @@ ahd_linux_pci_dev_remove(struct pci_dev *pdev)
struct ahd_softc *ahd = pci_get_drvdata(pdev); struct ahd_softc *ahd = pci_get_drvdata(pdev);
u_long s; u_long s;
if (ahd->platform_data && ahd->platform_data->host)
scsi_remove_host(ahd->platform_data->host);
ahd_lock(ahd, &s); ahd_lock(ahd, &s);
ahd_intr_enable(ahd, FALSE); ahd_intr_enable(ahd, FALSE);
ahd_unlock(ahd, &s); ahd_unlock(ahd, &s);
......
...@@ -1209,11 +1209,6 @@ ahc_platform_free(struct ahc_softc *ahc) ...@@ -1209,11 +1209,6 @@ ahc_platform_free(struct ahc_softc *ahc)
int i, j; int i, j;
if (ahc->platform_data != NULL) { if (ahc->platform_data != NULL) {
if (ahc->platform_data->host != NULL) {
scsi_remove_host(ahc->platform_data->host);
scsi_host_put(ahc->platform_data->host);
}
/* destroy all of the device and target objects */ /* destroy all of the device and target objects */
for (i = 0; i < AHC_NUM_TARGETS; i++) { for (i = 0; i < AHC_NUM_TARGETS; i++) {
starget = ahc->platform_data->starget[i]; starget = ahc->platform_data->starget[i];
...@@ -1242,6 +1237,9 @@ ahc_platform_free(struct ahc_softc *ahc) ...@@ -1242,6 +1237,9 @@ ahc_platform_free(struct ahc_softc *ahc)
0x1000); 0x1000);
} }
if (ahc->platform_data->host)
scsi_host_put(ahc->platform_data->host);
free(ahc->platform_data, M_DEVBUF); free(ahc->platform_data, M_DEVBUF);
} }
} }
......
...@@ -143,6 +143,9 @@ ahc_linux_pci_dev_remove(struct pci_dev *pdev) ...@@ -143,6 +143,9 @@ ahc_linux_pci_dev_remove(struct pci_dev *pdev)
struct ahc_softc *ahc = pci_get_drvdata(pdev); struct ahc_softc *ahc = pci_get_drvdata(pdev);
u_long s; u_long s;
if (ahc->platform_data && ahc->platform_data->host)
scsi_remove_host(ahc->platform_data->host);
ahc_lock(ahc, &s); ahc_lock(ahc, &s);
ahc_intr_enable(ahc, FALSE); ahc_intr_enable(ahc, FALSE);
ahc_unlock(ahc, &s); ahc_unlock(ahc, &s);
......
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