This patch addresses two problems:
1) Bulk reads should always use the DATA0 for the pid, and the write
PID should toggle between DATA0 and DATA1. The fix is using
dbgp_pid_write_update() and dbgp_pid_read_update().
2) The delay loop for waiting for a transaction was not long enough to
always complete the initial handshake inside dbgp_wait_until_done().
After the initial handshake the maximum delay length is never reached.
The combined result of these two changes allows for the removal of the
forced resynchronization where a bulk write was issued with a dummy
data payload only to get the device to start accepting data writes
again.
CC: Eric Biederman <ebiederm@xmission.com>
CC: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add support for USB serial interface provided by ViVOtech ViVOpay devices via
new driver vivopay-serial. Currently only the ViVOpay 8800 device is supported,
but support for similar devices can be added by adding the appropriate device
IDs to the driver.
Signed-off-by: Forest Bond <forest.bond@outpostembedded.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adding vbus_pin_inverted so that the usb detect pin can be active high
or low depending on HW implementation also replaced the
gpio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc); This
allows the driver to be loaded and save about 0,15W on the consumption.
Signed-off-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A bunch of USB gadget drivers where never ported from the linux 2.4
series to 2.6 kernels. However there's some code still in the tree for
them which isn't used and is probably untested for ages.
As the chance of these drivers being forward ported is probably quite
small now it might be time to get rid of them.
Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
init_completion() hasn't been called yet and the thread isn't created
if we end up here, so don't call complete() on thread_notifier.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The lock must be dropped before usb_autopm_interface_put() is called
Signed-off-by: Oliver Neukum <oliver@neukum.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes warning caused by calling min() macro
with arguments of different types:
drivers/usb/gadget/f_mass_storage.c:623: warning: \
comparison of distinct pointer types lacks a cast
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Marek Szyprowski <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When the HDC driver writes the data to the transfer buffers it pollutes
the D-cache (unlike DMA drivers where the device writes the data). If
the corresponding pages get mapped into user space, there are no
additional cache flushing operations performed and this causes random
user space faults on architectures with separate I and D caches
(Harvard) or those with aliasing D-cache.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Matthew Dharm <mdharm-kernel@one-eyed-alien.net>
Cc: Greg KH <greg@kroah.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As Alan Cox have pinpointed the driver still required protection against
parallels calls to the config ioctl(). If lock is still necessary the use of
BKL is abused here. So replace BKL with a more convenient mutex.
Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The mass storage function responded needlessly to a set
configuration packet. This was a leftover from converting
gadget (file storage gadget) into a composite function.
Moreover, it has failed to respond to get max LUN request.
Adding request queueing made the function work better.
Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adds a fallback which forces all LUNs ejection (including
non-removable and with prevent_medium_removal flag) when mass storage
function (MSF) worker thread exits and gadget fails to handle the
situation.
Previously, if thread_exits was not specified mass storage function
(MSF) did nothing when exiting thread as it's unclear for *function*
what to do when it's thread terminates so responsibility of handling
this situation was left to the *gadget* using the function.
The g_mass_storage handled the situation by unregistering itself (the
same thing that file storage gadget does). However, g_multi did
nothing and so MSF did not eject LUNs which prevented file system
unmounting.
Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Trying to use double buffer modes in RTL versions <2.0 may result in
infinite hangs or data corruption. So avoid them with older versions.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
All current Blackfin parts are using RTL v1.9, but they don't expose the
hardware registers to probe this dynamically. So hardcode the version to
v1.9 for now.
Need to move the local hwvers related defines higher up in the header so
that sub-musb headers may utilize them.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
As reported by Antonio, there are cases where the ep->lock
can be taken twice, triggering a deadlock.
The typical sequence is :
irq_handler
\
-> gadget.complete()
\
-> pxa27x_udc.pxa_ep_queue() : ep->lock is taken
\
-> gadget.complete()
\
-> pxa27x_udc.pxa_ep_queue() : ep->lock is taken
==> *deadlock*
The patch fixes this by :
- releasing the lock each time gadget.complete() is called
- adding a check in handle_ep() to detect a recursive call,
in which case the function becomes on no-op.
The patch is still not good enough for ep0. For this unique
endpoint, another well thought over patch will be needed.
Reported-by: Antonio Ospite <ospite@studenti.unina.it>
Tested-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add support for the serial port on devices based on the MosChip 7715,
which provides a serial and parallel port on a single usb interface.
This is added to the existing driver for the Moschip 7720 dual serial
port device. The 7715 is very similiar to the 7720, requiring only the
addition of a calc_num_ports() function, a separate interrupt-in
endpoint callback, and some manipulation of the port pointers added to
the attach() function to correct the fact that the usbserial core
erroneously assigns the first bulk in/out endpoint pair to the serial
port (the 7715 uses these for its parallel port). There is no support
for the 7715's parallel port yet.
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Johan Hovold points out that get_string() is basically just a
re-implimentation of usb_string(). It is also buggy. It does DMA on
the stack and it doesn't handle negative returns from
usb_get_descriptor(). Plus unicode_to_ascii() is a rubbish function and
moving to usb_string() avoids using it.
Let's eliminate get_string() entirely.
Reported-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This replaces deprecated dma_sync_single() with dma_sync_single_for_cpu().
There is no functional change because dma_sync_single() simply calls
dma_sync_single_for_cpu():
static inline void __deprecated dma_sync_single(struct device *dev,
dma_addr_t addr, size_t size,
enum dma_data_direction dir)
{
dma_sync_single_for_cpu(dev, addr, size, dir);
}
This fixes the following compile warnings:
drivers/usb/gadget/s3c-hsotg.c: In function 's3c_hsotg_unmap_dma':
drivers/usb/gadget/s3c-hsotg.c:376: warning: 'dma_sync_single' is deprecated (declared at /home/fujita/git/linux-2.6/include/linux/dma-mapping.h:109)
drivers/usb/gadget/s3c-hsotg.c: In function 's3c_hsotg_map_dma':
drivers/usb/gadget/s3c-hsotg.c:758: warning: 'dma_sync_single' is deprecated (declared at /home/fujita/git/linux-2.6/include/linux/dma-mapping.h:109)
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
we were printing the info about musb probe too early where
it was still possible for things to go wrong. Move the
down right before the return 0 statement. While at that
also convert pr_info to dev_info.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
when probe() fails, we should iounmap() the mapped address.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
after 2.6.34, those fields will be removed from
struct musb_hdrc_platform_data, it's expected
that other architectures are fixed by then.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
