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[SCSI] advansys: fix regression with request_firmware change 

On newer kernels users of advansys module are reporting system hang when
trying to load it without firmware files present. After looking closely
at description on https://qa.mandriva.com/show_bug.cgi?id=53220, I think
this is related to commit "[SCSI] advansys: use request_firmware". The
problem is that after switch to request_firmware, asc_dvc->err_code
isn't being set when firmware files aren't found or loading fails.

err_code is used by the driver to judge if there was a fatal error or
not, as can be seen for example on advansys_board_found, which will only
return -ENODEV when err_code is set. Because err_code isn't being set
when request_firmware fails, this is a change of behaviour of the code
before request_firmware addition, making it continue to load and it
fails later as the firmware wasn't really loaded.

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Herton Ronaldo Krzesinski 2010-03-19 19:37:26 -03:00 committed by James Bottomley
parent 89162e9c21
commit cf7474451c
1 changed files with 8 additions and 0 deletions
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8
drivers/scsi/advansys.c
View File

@ -4781,12 +4781,14 @@ static ushort AscInitAsc1000Driver(ASC_DVC_VAR *asc_dvc)
if (err) {
printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
fwname, err);
asc_dvc->err_code |= ASC_IERR_MCODE_CHKSUM;
return err;
}
if (fw->size < 4) {
printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
fw->size, fwname);
release_firmware(fw);
asc_dvc->err_code |= ASC_IERR_MCODE_CHKSUM;
return -EINVAL;
}
chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
@ -5110,12 +5112,14 @@ static int AdvInitAsc3550Driver(ADV_DVC_VAR *asc_dvc)
if (err) {
printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
fwname, err);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return err;
}
if (fw->size < 4) {
printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
fw->size, fwname);
release_firmware(fw);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return -EINVAL;
}
chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
@ -5624,12 +5628,14 @@ static int AdvInitAsc38C0800Driver(ADV_DVC_VAR *asc_dvc)
if (err) {
printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
fwname, err);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return err;
}
if (fw->size < 4) {
printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
fw->size, fwname);
release_firmware(fw);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return -EINVAL;
}
chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |
@ -6124,12 +6130,14 @@ static int AdvInitAsc38C1600Driver(ADV_DVC_VAR *asc_dvc)
if (err) {
printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
fwname, err);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return err;
}
if (fw->size < 4) {
printk(KERN_ERR "Bogus length %zu in image \"%s\"\n",
fw->size, fwname);
release_firmware(fw);
asc_dvc->err_code = ASC_IERR_MCODE_CHKSUM;
return -EINVAL;
}
chksum = (fw->data[3] << 24) | (fw->data[2] << 16) |