luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ieee1394: add quirk fix for Freecom HDD

Browse Source 
According to http://bugzilla.kernel.org/show_bug.cgi?id=12206, Freecom
FireWire Hard Drive 1TB reports max_rom=2 but returns garbage if block
read requests are used to read the config ROM.  Force max_rom=0 to limit
them to quadlet read requests.

Reported-by: Christian Mueller <cm1@mumac.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2008-12-13 01:43:59 +01:00
parent 8b1fae4e42
commit 25a41b2800
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/ieee1394/nodemgr.c
View File

@ -115,8 +115,14 @@ static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
return error; return error;
} }
#define OUI_FREECOM_TECHNOLOGIES_GMBH 0x0001db
static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci) static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci)
{ {
/* Freecom FireWire Hard Drive firmware bug */
if (be32_to_cpu(bus_info_data[3]) >> 8 == OUI_FREECOM_TECHNOLOGIES_GMBH)
return 0;
return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3; return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3;
} }