staging: hv: fix the page buffer when rndis data go across page boundary
In rndis_filter_receive_data(), we need to drop the 0th page and move the
rest of pages forward if the rndis data go across page boundary, otherwise
the page offset will overflow.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
staging: hv: fix counting of available buffer slots when send fails
Because the number of available buffer slots doesn't decrease for failed
sends, we should not call netvsc_xmit_completion(), which increase the
count of available slots. In this failed case, just free the memory is
enough.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
staging: hv: fix a kernel warning in netvsc_linkstatus_callback()
netif_notify_peers() caused a kernel warning in netvsc_linkstatus_callback(),
because netvsc_linkstatus_callback() is within IRQ context. So we move
the first call to netif_notify_peers() into queued work as well, but with
zero delay.
In addition to "staging-next", this should also be back-ported to stable
kernels 2.6.32 and later.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Wed, 31 Aug 2011 21:35:57 +0000 (14:35 -0700)]
Staging: hv: vmbus: Cleanup the code in process_chn_event()
A channel in Hyper-V is equivalent to a device. Thus, a channel is
persistent once it is presented to the guest, even if the driver
managing this device is unloaded. By checking and invoking the driver
specific callback function under the protection of the channel
inbound_lock, we can properly deal with racing driver unloads since an
unloading driver sets the callback to NULL under the protection of this
inbound_lock.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Wed, 31 Aug 2011 21:35:56 +0000 (14:35 -0700)]
Staging: hv: vmbus: Check for events before messages
The Windows team has informed us that on Windows guests on Hyper-V,
they check for events before messages. They also recommended that we do
the same. This patch addresses this.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
staging: lirc_sasem: fix NULL pointer dereference in sasem_probe
If any memory allocation failed, goto alloc_status_switch
leads to mutex_unlock(&context->ctx_lock) while context is NULL.
The patch moves alloc_status_switch to handle error conditions
in correct way.
Found by Linux Driver Verification project (linuxtesting.org).
staging: lirc: fix mismatch in mutex lock-unlock in imon_probe
If kzalloc failed for allocation of context, goto alloc_status_switch
leads to unlock of unacquired driver_lock. The patch moves
mutex_lock(&driver_lock) before allocation of context.
Found by Linux Driver Verification project (linuxtesting.org).
Randy Dunlap [Mon, 29 Aug 2011 20:54:59 +0000 (13:54 -0700)]
staging: fix rtl8192e build errors
drivers/staging/rtl8192e/rtllib.h:2329: error: field 'wx_sem' has incomplete type
drivers/staging/rtl8192e/rtllib.h:2330: error: field 'scan_sem' has incomplete type
drivers/staging/rtl8192e/rtllib.h:2331: error: field 'ips_sem' has incomplete type
drivers/staging/rtl8192e/rtllib_wx.c:267: error: implicit declaration of function 'down'
drivers/staging/rtl8192e/rtllib_wx.c:290: error: implicit declaration of function 'up' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Aaro Koskinen [Mon, 29 Aug 2011 20:14:31 +0000 (23:14 +0300)]
staging: xgifb: correct the default mode comment
According to the comment, the default mode should be 800x600x8 while
the index points actually to 800x600x16. Change the comment and move
the definition instead of changing the current behaviour.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Aaro Koskinen [Mon, 29 Aug 2011 20:14:27 +0000 (23:14 +0300)]
staging: xgifb: assume the default video mode also when module
The same default video mode should be assumed regardless if the driver
is a module or not. This won't change the current behaviour, but it will
simplify further changes.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Aaro Koskinen [Mon, 29 Aug 2011 20:14:24 +0000 (23:14 +0300)]
staging: xgifb: fix LVDS LCD resolution data setup
If the driver fails to get LVDS LCD data from the firmware, it falls
back to using driver's hardcoded values. However, this is done too
early in the probe. The selected video mode index is not yet known,
and also in some cases it could be defaulting to -1 resulting in a read
outside the array. Fix this by moving the array lookup after the video
mode validation.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Aaro Koskinen [Mon, 29 Aug 2011 20:14:20 +0000 (23:14 +0300)]
staging: xgifb: delete "off" option handling
It's possible to disable the built-in xgifb driver with the kernel
command line option:
video=xgifb:off
This is already handled by the generic framebuffer layer (fb_get_options()
will return TRUE resulting in init failure), so no need to process the
option in the driver.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bill Pemberton [Mon, 29 Aug 2011 17:48:54 +0000 (13:48 -0400)]
staging: serqt_usb2: remove ssu100 from supported devices
The serqt_usb2 driver will not work properly with the ssu100 device
even though it claims to support it. The ssu100 is supported by the
ssu100 driver in mainline so there is no need to have it claimed by
serqt_usb2.
staging/easycap: fix mismatch in easycap_poll() mutex lock-unlock
In case if condition (kd != isdongle(peasycap)) becomes true,
easycap_poll() returns without releasing easycapdc60_dongle[kd].mutex_video.
The patch adds mutex_unlock() before that return.
Found by Linux Driver Verification project (linuxtesting.org).
Mark Einon [Mon, 29 Aug 2011 17:42:37 +0000 (18:42 +0100)]
MAINAINERS: Add details for drivers/staging/et131x
Adding myself as a maintainer for this driver, as I appear to have been the only interested party for some time.
Not sure if Olaf Hartman is still interested? So will leave it up to him to add his name to the list.
Signed-off-by: Mark Einon <mark.einon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:33 +0000 (11:31 -0700)]
Staging: hv: vmbus: Properly deal with de-registering channel callback
Ensure that we correctly handle racing invocations of the channel callback
when the channel is being closed. We do this using the channel's inbound_lock.
A side-effect of this strategy is that we avoid repeatedly picking up this lock
as we drain the inbound ring-buffer.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:31 +0000 (11:31 -0700)]
Staging: hv: util: Adjust guest time in a process context
The current code was adjusting guest time in interrupt context; do this
in process context since we may have to initiate cross-processor
interrupts as part of setting time.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:26 +0000 (11:31 -0700)]
Staging: hv: storvsc: Fixup srb and scsi status for INQUIRY and MODE_SENSE
The current VHD handler on the Windows Host does not correctly handle
INQUIRY and MODE_SENSE commands with some options. Fixup srb_status
in these cases since the failure is not fatal.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:22 +0000 (11:31 -0700)]
Staging: hv: storvsc: Include storvsc.c in storvsc_drv.c
As part of further cleanup of our storage drivers, include the content
of storvsc.c into storvsc_drv.c and delete storvsc.c and do the necessary
adjustments.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:18 +0000 (11:31 -0700)]
Staging: hv: storvsc: Handle IDE devices using the storvsc driver
Now, enable handling of all IDE devices by extending the storvsc
device id table to handle IDE guid. As part of this cleanup Kconfig
and Hyper-V Makefile to not build the IDE driver (blkvsc).
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:17 +0000 (11:31 -0700)]
Staging: hv: storvsc: Add code to handle IDE devices using the storvsc driver
Add code to handle IDE devices using the storvsc driver. The storvsc_probe()
is modified so that the storvsc driver can surface all disks presented to the
guest as scsi devices using generic upper level Linux scsi drivers.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
K. Y. Srinivasan [Sat, 27 Aug 2011 18:31:16 +0000 (11:31 -0700)]
Staging: hv: netvsc: Get rid of the refcnt field in struct netvsc_device
Get rid of the refcnt field in struct netvsc_device. We implement the following
logic to manage the life cycle of the device: If the device is being destroyed,
we do not allow any outgoing traffic. Furthermore, if the device is being
destroyed, we allow incoming traffic only to drain outgoing traffic. Note that
the driver may send some book keeping messages to the host not known to
upper level Linux code.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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