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path: root/drivers/scsi/ses.c
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Diffstat (limited to 'drivers/scsi/ses.c')
-rw-r--r--drivers/scsi/ses.c62
1 files changed, 51 insertions, 11 deletions
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 8927f9f54ad9..11826c5c2dd4 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -51,6 +51,13 @@ struct ses_component {
u64 addr;
};
+static bool ses_page2_supported(struct enclosure_device *edev)
+{
+ struct ses_device *ses_dev = edev->scratch;
+
+ return (ses_dev->page2 != NULL);
+}
+
static int ses_probe(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
@@ -179,7 +186,8 @@ static unsigned char *ses_get_page2_descriptor(struct enclosure_device *edev,
unsigned char *type_ptr = ses_dev->page1_types;
unsigned char *desc_ptr = ses_dev->page2 + 8;
- ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
+ if (ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len) < 0)
+ return NULL;
for (i = 0; i < ses_dev->page1_num_types; i++, type_ptr += 4) {
for (j = 0; j < type_ptr[1]; j++) {
@@ -203,6 +211,10 @@ static void ses_get_fault(struct enclosure_device *edev,
{
unsigned char *desc;
+ if (!ses_page2_supported(edev)) {
+ ecomp->fault = 0;
+ return;
+ }
desc = ses_get_page2_descriptor(edev, ecomp);
if (desc)
ecomp->fault = (desc[3] & 0x60) >> 4;
@@ -215,6 +227,9 @@ static int ses_set_fault(struct enclosure_device *edev,
unsigned char desc[4];
unsigned char *desc_ptr;
+ if (!ses_page2_supported(edev))
+ return -EINVAL;
+
desc_ptr = ses_get_page2_descriptor(edev, ecomp);
if (!desc_ptr)
@@ -242,6 +257,10 @@ static void ses_get_status(struct enclosure_device *edev,
{
unsigned char *desc;
+ if (!ses_page2_supported(edev)) {
+ ecomp->status = 0;
+ return;
+ }
desc = ses_get_page2_descriptor(edev, ecomp);
if (desc)
ecomp->status = (desc[0] & 0x0f);
@@ -252,6 +271,10 @@ static void ses_get_locate(struct enclosure_device *edev,
{
unsigned char *desc;
+ if (!ses_page2_supported(edev)) {
+ ecomp->locate = 0;
+ return;
+ }
desc = ses_get_page2_descriptor(edev, ecomp);
if (desc)
ecomp->locate = (desc[2] & 0x02) ? 1 : 0;
@@ -264,6 +287,9 @@ static int ses_set_locate(struct enclosure_device *edev,
unsigned char desc[4];
unsigned char *desc_ptr;
+ if (!ses_page2_supported(edev))
+ return -EINVAL;
+
desc_ptr = ses_get_page2_descriptor(edev, ecomp);
if (!desc_ptr)
@@ -292,6 +318,9 @@ static int ses_set_active(struct enclosure_device *edev,
unsigned char desc[4];
unsigned char *desc_ptr;
+ if (!ses_page2_supported(edev))
+ return -EINVAL;
+
desc_ptr = ses_get_page2_descriptor(edev, ecomp);
if (!desc_ptr)
@@ -328,6 +357,11 @@ static void ses_get_power_status(struct enclosure_device *edev,
{
unsigned char *desc;
+ if (!ses_page2_supported(edev)) {
+ ecomp->power_status = 0;
+ return;
+ }
+
desc = ses_get_page2_descriptor(edev, ecomp);
if (desc)
ecomp->power_status = (desc[3] & 0x10) ? 0 : 1;
@@ -340,6 +374,9 @@ static int ses_set_power_status(struct enclosure_device *edev,
unsigned char desc[4];
unsigned char *desc_ptr;
+ if (!ses_page2_supported(edev))
+ return -EINVAL;
+
desc_ptr = ses_get_page2_descriptor(edev, ecomp);
if (!desc_ptr)
@@ -601,7 +638,7 @@ static int ses_intf_add(struct device *cdev,
{
struct scsi_device *sdev = to_scsi_device(cdev->parent);
struct scsi_device *tmp_sdev;
- unsigned char *buf = NULL, *hdr_buf, *type_ptr;
+ unsigned char *buf = NULL, *hdr_buf, *type_ptr, page;
struct ses_device *ses_dev;
u32 result;
int i, types, len, components = 0;
@@ -630,7 +667,8 @@ static int ses_intf_add(struct device *cdev,
if (!hdr_buf || !ses_dev)
goto err_init_free;
- result = ses_recv_diag(sdev, 1, hdr_buf, INIT_ALLOC_SIZE);
+ page = 1;
+ result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
if (result)
goto recv_failed;
@@ -639,7 +677,7 @@ static int ses_intf_add(struct device *cdev,
if (!buf)
goto err_free;
- result = ses_recv_diag(sdev, 1, buf, len);
+ result = ses_recv_diag(sdev, page, buf, len);
if (result)
goto recv_failed;
@@ -669,9 +707,10 @@ static int ses_intf_add(struct device *cdev,
ses_dev->page1_len = len;
buf = NULL;
- result = ses_recv_diag(sdev, 2, hdr_buf, INIT_ALLOC_SIZE);
+ page = 2;
+ result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
if (result)
- goto recv_failed;
+ goto page2_not_supported;
len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
buf = kzalloc(len, GFP_KERNEL);
@@ -688,7 +727,8 @@ static int ses_intf_add(struct device *cdev,
/* The additional information page --- allows us
* to match up the devices */
- result = ses_recv_diag(sdev, 10, hdr_buf, INIT_ALLOC_SIZE);
+ page = 10;
+ result = ses_recv_diag(sdev, page, hdr_buf, INIT_ALLOC_SIZE);
if (!result) {
len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
@@ -696,13 +736,14 @@ static int ses_intf_add(struct device *cdev,
if (!buf)
goto err_free;
- result = ses_recv_diag(sdev, 10, buf, len);
+ result = ses_recv_diag(sdev, page, buf, len);
if (result)
goto recv_failed;
ses_dev->page10 = buf;
ses_dev->page10_len = len;
buf = NULL;
}
+page2_not_supported:
scomp = kzalloc(sizeof(struct ses_component) * components, GFP_KERNEL);
if (!scomp)
goto err_free;
@@ -734,7 +775,7 @@ static int ses_intf_add(struct device *cdev,
recv_failed:
sdev_printk(KERN_ERR, sdev, "Failed to get diagnostic page 0x%x\n",
- result);
+ page);
err = -ENODEV;
err_free:
kfree(buf);
@@ -777,8 +818,6 @@ static void ses_intf_remove_enclosure(struct scsi_device *sdev)
if (!edev)
return;
- enclosure_unregister(edev);
-
ses_dev = edev->scratch;
edev->scratch = NULL;
@@ -790,6 +829,7 @@ static void ses_intf_remove_enclosure(struct scsi_device *sdev)
kfree(edev->component[0].scratch);
put_device(&edev->edev);
+ enclosure_unregister(edev);
}
static void ses_intf_remove(struct device *cdev,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 16:53:42 +0000