One small fix to SCSI Enclosure Services to fix a regression caused by
another recent fix.
The patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Jiri Kosina (1):
scsi: ses: Handle enclosure with just a primary component gracefully
And the diffstat:
drivers/scsi/ses.c | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)
With full diff below.
James
---
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index b11a9162e73a..b54f2c6c08c3 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -509,9 +509,6 @@ static int ses_enclosure_find_by_addr(struct enclosure_device *edev,
int i;
struct ses_component *scomp;
- if (!edev->component[0].scratch)
- return 0;
-
for (i = 0; i < edev->components; i++) {
scomp = edev->component[i].scratch;
if (scomp->addr != efd->addr)
@@ -602,8 +599,10 @@ static void ses_enclosure_data_process(struct enclosure_device *edev,
components++,
type_ptr[0],
name);
- else
+ else if (components < edev->components)
ecomp = &edev->component[components++];
+ else
+ ecomp = ERR_PTR(-EINVAL);
if (!IS_ERR(ecomp)) {
if (addl_desc_ptr) {
@@ -734,11 +733,6 @@ static int ses_intf_add(struct device *cdev,
components += type_ptr[1];
}
- if (components == 0) {
- sdev_printk(KERN_WARNING, sdev, "enclosure has no enumerated components\n");
- goto err_free;
- }
-
ses_dev->page1 = buf;
ses_dev->page1_len = len;
buf = NULL;
@@ -780,9 +774,11 @@ static int ses_intf_add(struct device *cdev,
buf = NULL;
}
page2_not_supported:
- scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL);
- if (!scomp)
- goto err_free;
+ if (components > 0) {
+ scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL);
+ if (!scomp)
+ goto err_free;
+ }
edev = enclosure_register(cdev->parent, dev_name(&sdev->sdev_gendev),
components, &ses_enclosure_callbacks);
