commit df602c2d23 upstream.
Even if the USB-to-ATAPI converter supported multiple LUNs, this
driver would always detect the same physical device or media because
it doesn't use srb->device->lun in any way.
Tested with an Hewlett-Packard CD-Writer Plus 8200e.
Signed-off-by: Daniele Forsi <dforsi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4d7c0136a5 upstream.
Dan writes:
"The Dell drivers use the same configuration for PIDs:
81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card
81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card
81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card
81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card
81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card
These devices are all clearly Sierra devices, but are also definitely
Gobi-based. The A8 might be the MC7700/7710 and A9 is likely a MC7750.
>From DellGobi5kSetup.exe from the Dell drivers:
usbif0: serial/firmware loader?
usbif2: nmea
usbif3: modem/ppp
usbif8: net/QMI"
Reported-by: AceLan Kao <acelan.kao@canonical.com>
Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c1db30a2a7 upstream.
Some OHCI controllers from ATI/AMD seem to have difficulty with
"global" USB suspend, that is, suspending an entire USB bus without
setting the suspend feature for each port connected to a device. When
we try to resume the child devices, the controller gives timeout
errors on the unsuspended ports, requiring resets, and can even cause
ohci-hcd to hang; see
http://marc.info/?l=linux-usb&m=139514332820398&w=2
and the following messages.
This patch fixes the problem by adding a new quirk flag to ohci-hcd.
The flag causes the ohci_rh_suspend() routine to suspend each
unsuspended, enabled port before suspending the root hub. This
effectively converts the "global" suspend to an ordinary root-hub
suspend. There is no need to unsuspend these ports when the root hub
is resumed, because the child devices will be resumed anyway in the
course of a normal system resume ("global" suspend is never used for
runtime PM).
This patch should be applied to all stable kernels which include
commit 0aa2832dd0 (USB: use "global suspend" for system sleep on
USB-2 buses) or a backported version thereof.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Peter Münster <pmlists@free.fr>
Tested-by: Peter Münster <pmlists@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 886c7c426d upstream.
When using dt resources retrieval (interrupts and reg properties) there is
no predefined order for these resources in the platform dev resource
table. Also don't expect the number of resource to be always 2.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
Acked-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d183c81929 upstream.
Per reference manuals of Freescale P1020 and P2020 SoCs, USB controller
present in these SoCs has bit 17 of USBx_CONTROL register marked as
Reserved - there is no PHY_CLK_VALID bit there.
Testing for this bit in ehci_fsl_setup_phy() behaves differently on two
P1020RDB boards available here - on one board test passes and fsl-usb
init succeeds, but on other board test fails, causing fsl-usb init to
fail.
This patch changes ehci_fsl_setup_phy() not to test PHY_CLK_VALID on
controller version 1.6 that (per manual) does not have this bit.
Signed-off-by: Nikita Yushchenko <nyushchenko@dev.rtsoft.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 34f972d615 upstream.
A number of older CMOTech modems are based on Qualcomm
chips. The blacklisted interfaces are QMI/wwan.
Reported-by: Lars Melin <larsm17@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5509076d1b upstream.
During firmware download the device expects memory addresses in
big-endian byte order. As the wIndex parameter which hold the address is
sent in little-endian byte order regardless of host byte order, we need
to use swab16 rather than cpu_to_be16.
Also make sure to handle the struct ti_i2c_desc size parameter which is
returned in little-endian byte order.
Reported-by: Ludovic Drolez <ldrolez@debian.org>
Tested-by: Ludovic Drolez <ldrolez@debian.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 10164c2ad6 upstream.
Fix driver new_id sysfs-attribute removal deadlock by making sure to
not hold any locks that the attribute operations grab when removing the
attribute.
Specifically, usb_serial_deregister holds the table mutex when
deregistering the driver, which includes removing the new_id attribute.
This can lead to a deadlock as writing to new_id increments the
attribute's active count before trying to grab the same mutex in
usb_serial_probe.
The deadlock can easily be triggered by inserting a sleep in
usb_serial_deregister and writing the id of an unbound device to new_id
during module unload.
As the table mutex (in this case) is used to prevent subdriver unload
during probe, it should be sufficient to only hold the lock while
manipulating the usb-serial driver list during deregister. A racing
probe will then either fail to find a matching subdriver or fail to get
the corresponding module reference.
Since v3.15-rc1 this also triggers the following lockdep warning:
======================================================
[ INFO: possible circular locking dependency detected ]
3.15.0-rc2 #123 Tainted: G W
-------------------------------------------------------
modprobe/190 is trying to acquire lock:
(s_active#4){++++.+}, at: [<c0167aa0>] kernfs_remove_by_name_ns+0x4c/0x94
but task is already holding lock:
(table_lock){+.+.+.}, at: [<bf004d84>] usb_serial_deregister+0x3c/0x78 [usbserial]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (table_lock){+.+.+.}:
[<c0075f84>] __lock_acquire+0x1694/0x1ce4
[<c0076de8>] lock_acquire+0xb4/0x154
[<c03af3cc>] _raw_spin_lock+0x4c/0x5c
[<c02bbc24>] usb_store_new_id+0x14c/0x1ac
[<bf007eb4>] new_id_store+0x68/0x70 [usbserial]
[<c025f568>] drv_attr_store+0x30/0x3c
[<c01690e0>] sysfs_kf_write+0x5c/0x60
[<c01682c0>] kernfs_fop_write+0xd4/0x194
[<c010881c>] vfs_write+0xbc/0x198
[<c0108e4c>] SyS_write+0x4c/0xa0
[<c000f880>] ret_fast_syscall+0x0/0x48
-> #0 (s_active#4){++++.+}:
[<c03a7a28>] print_circular_bug+0x68/0x2f8
[<c0076218>] __lock_acquire+0x1928/0x1ce4
[<c0076de8>] lock_acquire+0xb4/0x154
[<c0166b70>] __kernfs_remove+0x254/0x310
[<c0167aa0>] kernfs_remove_by_name_ns+0x4c/0x94
[<c0169fb8>] remove_files.isra.1+0x48/0x84
[<c016a2fc>] sysfs_remove_group+0x58/0xac
[<c016a414>] sysfs_remove_groups+0x34/0x44
[<c02623b8>] driver_remove_groups+0x1c/0x20
[<c0260e9c>] bus_remove_driver+0x3c/0xe4
[<c026235c>] driver_unregister+0x38/0x58
[<bf007fb4>] usb_serial_bus_deregister+0x84/0x88 [usbserial]
[<bf004db4>] usb_serial_deregister+0x6c/0x78 [usbserial]
[<bf005330>] usb_serial_deregister_drivers+0x2c/0x4c [usbserial]
[<bf016618>] usb_serial_module_exit+0x14/0x1c [sierra]
[<c009d6cc>] SyS_delete_module+0x184/0x210
[<c000f880>] ret_fast_syscall+0x0/0x48
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(table_lock);
lock(s_active#4);
lock(table_lock);
lock(s_active#4);
*** DEADLOCK ***
1 lock held by modprobe/190:
#0: (table_lock){+.+.+.}, at: [<bf004d84>] usb_serial_deregister+0x3c/0x78 [usbserial]
stack backtrace:
CPU: 0 PID: 190 Comm: modprobe Tainted: G W 3.15.0-rc2 #123
[<c0015e10>] (unwind_backtrace) from [<c0013728>] (show_stack+0x20/0x24)
[<c0013728>] (show_stack) from [<c03a9a54>] (dump_stack+0x24/0x28)
[<c03a9a54>] (dump_stack) from [<c03a7cac>] (print_circular_bug+0x2ec/0x2f8)
[<c03a7cac>] (print_circular_bug) from [<c0076218>] (__lock_acquire+0x1928/0x1ce4)
[<c0076218>] (__lock_acquire) from [<c0076de8>] (lock_acquire+0xb4/0x154)
[<c0076de8>] (lock_acquire) from [<c0166b70>] (__kernfs_remove+0x254/0x310)
[<c0166b70>] (__kernfs_remove) from [<c0167aa0>] (kernfs_remove_by_name_ns+0x4c/0x94)
[<c0167aa0>] (kernfs_remove_by_name_ns) from [<c0169fb8>] (remove_files.isra.1+0x48/0x84)
[<c0169fb8>] (remove_files.isra.1) from [<c016a2fc>] (sysfs_remove_group+0x58/0xac)
[<c016a2fc>] (sysfs_remove_group) from [<c016a414>] (sysfs_remove_groups+0x34/0x44)
[<c016a414>] (sysfs_remove_groups) from [<c02623b8>] (driver_remove_groups+0x1c/0x20)
[<c02623b8>] (driver_remove_groups) from [<c0260e9c>] (bus_remove_driver+0x3c/0xe4)
[<c0260e9c>] (bus_remove_driver) from [<c026235c>] (driver_unregister+0x38/0x58)
[<c026235c>] (driver_unregister) from [<bf007fb4>] (usb_serial_bus_deregister+0x84/0x88 [usbserial])
[<bf007fb4>] (usb_serial_bus_deregister [usbserial]) from [<bf004db4>] (usb_serial_deregister+0x6c/0x78 [usbserial])
[<bf004db4>] (usb_serial_deregister [usbserial]) from [<bf005330>] (usb_serial_deregister_drivers+0x2c/0x4c [usbserial])
[<bf005330>] (usb_serial_deregister_drivers [usbserial]) from [<bf016618>] (usb_serial_module_exit+0x14/0x1c [sierra])
[<bf016618>] (usb_serial_module_exit [sierra]) from [<c009d6cc>] (SyS_delete_module+0x184/0x210)
[<c009d6cc>] (SyS_delete_module) from [<c000f880>] (ret_fast_syscall+0x0/0x48)
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2e01280d28 upstream.
This reverts commit 1ebca9dad5.
This device was erroneously added to the sierra driver even though it's
not a Sierra device and was already handled by the option driver.
Cc: Richard Farina <sidhayn@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bd73bd8831 upstream.
Fix regression introduced by commit 8e493ca176 ("USB: usb_wwan: fix
bulk-urb allocation") by making sure to require both bulk-in and out
endpoints during port probe.
The original option driver (which usb_wwan is based on) was written
under the assumption that either endpoint could be missing, but
evidently this cannot have been tested properly. Specifically, it would
handle opening a device without bulk-in (but would blow up during resume
which was implemented later), but not a missing bulk-out in write()
(although it is handled in some places such as write_room()).
Fortunately (?), the driver also got the test for missing endpoints
wrong so the urbs were in fact always allocated, although they would be
initialised using the wrong endpoint address (0) and any submission of
such an urb would fail.
The commit mentioned above fixed the test for missing endpoints but
thereby exposed the other bugs which would now generate null-pointer
exceptions rather than failed urb submissions.
The regression was introduced in v3.7, but the offending commit was also
marked for stable.
Reported-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit eee3f15d5f upstream.
instead of relying on the otg pointer, which
can be NULL in certain cases, we can use the
gadget and host pointers we already hold inside
struct musb.
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6aec044cc2 upstream.
When a driver doesn't have pre_reset, post_reset, or reset_resume
methods, the USB core unbinds that driver when its device undergoes a
reset or a reset-resume, and then rebinds it afterward.
The existing straightforward implementation can lead to problems,
because each interface gets unbound and rebound before the next
interface is handled. If a driver claims additional interfaces, the
claim may fail because the old binding instance may still own the
additional interface when the new instance tries to claim it.
This patch fixes the problem by first unbinding all the interfaces
that are marked (i.e., their needs_binding flag is set) and then
rebinding all of them.
The patch also makes the helper functions in driver.c a little more
uniform and adjusts some out-of-date comments.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: "Poulain, Loic" <loic.poulain@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
