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The function was always setting the return value to the amount of
bytes transferred, overwriting the error code in error paths.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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When the device stalls, clear it and retry; if it keeps failing too
often, reset the device.
This specially happens when running on virtual machines; the real
hardware doesn't seem to trip on stalls too much, except for a few
reports in the mailing list (still to be confirmed this is the cause,
although it seems likely.
NOTE: it is not clear if the URB has to be resubmitted fully or start
only at the offset of the first transaction sent. Can't find
documentation to clarify one end or the other.
Tests that just resubmit the whole URB seemed to work in my
environment.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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The USB code was incorrectly specifiying timeouts to be in jiffies vs
msecs. On top of that, lower it to 200ms, as 1s is really too long
(doesn't allow the watchdog to trip a reset if the device timesout too
often).
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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The kernel's %zd modifier does not really work. Use %ld (has to cast
ssize_t to long).
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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Because some underlying bus APIs (like USB) don't like data buffers in
the stack or vmalloced areas, the i2400m driver provides a scratch
buffer (i2400m->bm_cmd_buf) for said low-level drivers to copy command
data to before passing it to said API. This is only used during boot
mode.
However, at some the code was copying the buffer even when the command
was already specified in said buffer. This is ok, but it needs to be
more careful. As thus, change so that:
(a) the copy happens only if command buffer is not the scratch buffer
(b) use memmove() in case there is overlapping
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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Newer generations of the i2400m USB WiMAX device use a different
endpoint map; in order to make it easy to support it, we make the
endpoint-to-function mapeable instead of static.
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
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This implements the backends for the generic driver (i2400m) to be
able to load firmware to the USB device.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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