litmus-rt.git/drivers/usb/class, branch master

cdc-acm: Add support of ATOL FPrint fiscal printers

2015-06-29T19:35:29+00:00

commit 15bf722e6f6c0b884521a0363204532e849deb7f upstream.

ATOL FPrint fiscal printers require usb_clear_halt to be executed
to work properly. Add quirk to fix the issue.

Signed-off-by: Alexey Sokolov 
Signed-off-by: Greg Kroah-Hartman

cdc-acm: prevent infinite loop when parsing CDC headers.

2015-04-28T10:53:16+00:00

Phil and I found out a problem with commit:

  7e860a6e7aa6 ("cdc-acm: add sanity checks")

It added some sanity checks to ignore potential garbage in CDC headers but
also introduced a potential infinite loop.  This can happen at the first
loop iteration (elength = 0 in that case) if the description isn't a
DT_CS_INTERFACE or later if 'buffer[0]' is zero.

It should also be noted that the wrong length was being added to 'buffer'
in case 'buffer[1]' was not a DT_CS_INTERFACE descriptor, since elength was
assigned after that check in the loop.

A specially crafted USB device could be used to trigger this infinite loop.

Fixes: 7e860a6e7aa6 ("cdc-acm: add sanity checks")
Signed-off-by: Phil Turnbull 
Signed-off-by: Quentin Casasnovas 
CC: Sergei Shtylyov 
CC: Oliver Neukum 
CC: Adam Lee 
CC: 
Signed-off-by: Greg Kroah-Hartman

cdc-wdm: error returns need to be translated

2015-03-26T09:51:57+00:00

One more case of error codes not correctly being
correctly returned to user space.

Signed-off-by: Olive Neukum 0
Signed-off-by: Greg Kroah-Hartman

cdc-wdm: fix endianness bug in debug statements

2015-03-26T09:51:56+00:00

Values directly from descriptors given in debug statements
must be converted to native endianness.

Signed-off-by: Oliver Neukum 
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

cdc-wdm: unify error handling in write

2015-03-26T09:51:56+00:00

This makes sure the error handling path is the same for
all error conditions, thus reducing code duplication.

Signed-off-by: Oliver Neukum 0
Signed-off-by: Greg Kroah-Hartman

cdc-acm: convert to not directly using urb->status

2015-03-26T09:51:56+00:00

A step on the road to passing status as a parameter

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

cdc-acm: surpress misleading message

2015-03-26T09:51:56+00:00

During the entry intro suspend a misleading message can be
printed. Surpress it by checking the specific error.

Signed-off-by: Oliver Neukum 0
Signed-off-by: Greg Kroah-Hartman

cdc-acm: fix race between callback and unthrottle

2015-03-26T09:50:52+00:00

Abn URB may be may marked free only after the buffer has been
processed or there is a small window during which it could
be submitted on another CPU and overwrite an unprocessed buffer

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

cdc-wdm: return correct error codes

2015-03-26T09:50:52+00:00

Lieing to user space is wrong. The real reason for a failure
to write should be returned to user space.

Signed-off-by: Oliver Neukum 0
Signed-off-by: Greg Kroah-Hartman

cdc-acm: Add support for Denso cradle CU-321

2015-02-24T16:38:47+00:00

In order to support an older USB cradle by Denso, I added its vendor- and product-ID to the array of usb_device_id acm_ids. In this way cdc-acm feels responsible for this cradle. The related /dev/ttyACM node is being created properly, and the data transfer works.

However, later cradle models by Denso do have proper descriptors, so the patch is not required for these. At the same time both the older and the later model have the same vendor- and product-ID, but they both work with the patched driver.

Declaration of the Denso cradles I tested:
- both models have the same IDs: vendorID 0x076d, productID 0x0006
- older model: Denso CU-321 (descriptors not properly set)
- later model: Denso CU-821 (with proper descriptors)

Signed-off-by: Bjoern Gerhart 
Acked-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman