On Tue, 26 Aug 2003, Uberto Barbini wrote:
> >> I'm a bit tired of blind suggestions, so I'll be grateful if someone gives
> >> me any hint on how usb-storage is supposed to work and I'm glad to do some
> >> debug on c code if necessary.
>
> BU> Trying configuring usb-storage debugging on, and post a copy of the
> BU> debugging messages that appear in your system log when you plug in your
> BU> usb-key.
>
> Thanks, I append my logs with usbkey and CF reader.
>
> Note also that I'm having acpi problems with test4 and my rhine net
> card (you can see the interupt conflicts) but CF still works and
> usbkey still don't.
The log you attached doesn't contain any debugging information. Probably
you have your /etc/syslog.conf set up only to accept kernel messages with
higher priority.
Judging from what is in there, my guess is that your usb-key doesn't like
the MODE_SENSE command to read the cache page. Try applying the patch
below and see if it helps.
If it doesn't, change syslog.conf to accept _all_ kernel messages and post
the resulting kernel log.
Alan Stern
===== sd.c 1.52 vs edited =====
--- 1.52/drivers/scsi/sd.c Tue Jul 1 17:54:19 2003
+++ edited/drivers/scsi/sd.c Thu Jul 31 11:05:01 2003
@@ -1080,6 +1080,7 @@
sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname,
struct scsi_request *SRpnt, unsigned char *buffer) {
int res;
+ const int dbd = 0; /* Some devices don't like DBD */
struct scsi_mode_data data;
/*
@@ -1087,7 +1088,7 @@
* We have to start carefully: some devices hang if we ask
* for more than is available.
*/
- res = sd_do_mode_sense(SRpnt, 0, 0x3F, buffer, 4, &data);
+ res = sd_do_mode_sense(SRpnt, dbd, 0x3F, buffer, 4, &data);
/*
* Second attempt: ask for page 0
@@ -1095,13 +1096,13 @@
* Sense Key 5: Illegal Request, Sense Code 24: Invalid field in CDB.
*/
if (!scsi_status_is_good(res))
- res = sd_do_mode_sense(SRpnt, 0, 0, buffer, 4, &data);
+ res = sd_do_mode_sense(SRpnt, dbd, 0, buffer, 4, &data);
/*
* Third attempt: ask 255 bytes, as we did earlier.
*/
if (!scsi_status_is_good(res))
- res = sd_do_mode_sense(SRpnt, 0, 0x3F, buffer, 255, &data);
+ res = sd_do_mode_sense(SRpnt, dbd, 0x3F, buffer, 255, &data);
if (!scsi_status_is_good(res)) {
printk(KERN_WARNING
@@ -1124,7 +1125,7 @@
struct scsi_request *SRpnt, unsigned char *buffer) {
int len = 0, res;
- const int dbd = 0; /* DBD */
+ const int dbd = 0; /* Some devices don't like DBD */
const int modepage = 0x08; /* current values, cache page */
struct scsi_mode_data data;
@@ -1134,10 +1135,11 @@
if (scsi_status_is_good(res)) {
/* that went OK, now ask for the proper length */
- len = data.length;
- if (len > 128)
- len = 128;
- res = sd_do_mode_sense(SRpnt, dbd, modepage, buffer,
+ len = data.header_length + data.block_descriptor_length + 4;
+ if (len > 512)
+ res = SAM_STAT_BUSY;
+ else
+ res = sd_do_mode_sense(SRpnt, dbd, modepage, buffer,
len, &data);
}
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