The `insn_bits` handler `ni_65xx_dio_insn_bits()` has a `for` loop that
currently writes (optionally) and reads back up to 5 "ports" consisting
of 8 channels each. It reads up to 32 1-bit channels but can only read
and write a whole port at once - it needs to handle up to 5 ports as the
first channel it reads might not be aligned on a port boundary. It
breaks out of the loop early if the next port it handles is beyond the
final port on the card. It also breaks out early on the 5th port in the
loop if the first channel was aligned. Unfortunately, it doesn't check
that the current port it is dealing with belongs to the comedi subdevice
the `insn_bits` handler is acting on. That's a bug.
Redo the `for` loop to terminate after the final port belonging to the
subdevice, changing the loop variable in the process to simplify things
a bit. The `for` loop could now try and handle more than 5 ports if the
subdevice has more than 40 channels, but the test `if (bitshift >= 32)`
ensures it will break out early after 4 or 5 ports (depending on whether
the first channel is aligned on a port boundary). (`bitshift` will be
between -7 and 7 inclusive on the first iteration, increasing by 8 for
each subsequent operation.)
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: <stable@vger.kernel.org> # 3.10.y 3.11.y 3.12.y
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since commit b5dc0d10 (drm/imx: kill firstopen callback) the following probe
failure is seen:
[drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[drm] No driver support for vblank timestamp query.
[drm] Initialized imx-drm 1.0.0 20120507 on minor 0
imx-ldb ldb.10: adding encoder failed with -16
imx-ldb: probe of ldb.10 failed with error -16
imx-ipuv3 2400000.ipu: IPUv3H probed
imx-ipuv3 2800000.ipu: IPUv3H probed
imx-ipuv3-crtc imx-ipuv3-crtc.0: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.0 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.1: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.1 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.2: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.2 failed with error -16
imx-ipuv3-crtc imx-ipuv3-crtc.3: adding crtc failed with -16.
imx-ipuv3-crtc: probe of imx-ipuv3-crtc.3 failed with error -16
The reason for the probe failure is that now 'imxdrm->references' is incremented
early in imx_drm_driver_load(), so the following checks in imx_drm_add_crtc()
and imx_drm_add_encoder():
if (imxdrm->references) {
ret = -EBUSY;
goto err_busy;
}
,will always fail.
Instead of manually keeping the references in the imx-drm driver, let's use
drm->open_count.
After this patch, lvds panel is functional on a mx6qsabrelite board.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't allow entry to iwctl_siwencodeext if device not open.
This fixes a race condition where wpa supplicant/network manager
enters the function when the device is already closed.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org # 3.8+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The vt6656 is prone to resetting on the usb bus.
It seems there is a race condition and wpa supplicant is
trying to open the device via iw_handlers before its actually
closed at a stage that the buffers are being removed.
The device is longer considered open when the
buffers are being removed. So move ~DEVICE_FLAGS_OPENED
flag to before freeing the device buffers.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There seems to be race condition that the device is ndo_start_xmit
at a point where the device is closing and apTD is NULL resulting
in dead lock.
Add a NULL check to apTD and return NULL to calling functions.
This is more likely on 64 bit systems.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sizeof when applied to a pointer typed expression gives the size of the
pointer.
Found by coccinelle spatch "misc/noderef.cocci"
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
recently broken, cd6fe06588
staging:iio:hmc5843: Use i2c_smbus_read_word_swapped()
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The lux_uscale value is not initialized at probe. The value will be
uninitialized unless a value is written to it through the iio channel interface.
This fixes that.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/65998
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This only occurs in the unlikely event that the example driver is built
in whilst the buffer implementation is not.
Solved by switching from a depends on to a select for this particular case.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The Fastwel UNIOxx-5 is a PC/104 board, so put COMEDI_UNIOXX5 under
COMEDI_ISA_DRIVERS.
The DIL/Net-PC 1486 is a 486 system, so put COMEDI_SSV_DNP under
COMEDI_MISC_DRIVERS and add a dependency on X86_32 || COMPILE_TEST.
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In some circumstances, the performance of this driver is highly degraded,
and ifconfig reports large numbers of dropped packets. By increasing the
maximum RX gain from 0x3e to 0x4e, performance is greatly improved.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Smatch shows the following warning:
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:161 rtw_set_ie() info: ignoring unreachable code.
The cause is a module exit tracing statement after a return.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Smatch reports the following warning:
"drivers/staging/rtl8188eu/core/rtw_mlme_ext.c:8328 mlme_evt_hdl()
error: buffer overflow 'wlanevents' 24 <= 24"
8321 /* checking if event code is valid */
8322 if (evt_code >= MAX_C2HEVT) {
^^^^^^^^^^^^^^^^^^^^^^
8323 RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_, ("\nEvent Code(%d) mismatch!\n", evt_code));
8324 goto _abort_event_;
8325 }
8326
8327 /* checking if event size match the event parm size */
8328 if ((wlanevents[evt_code].parmsize != 0) &&
^^^^^^^^^^^^^^^^^^^^
8329 (wlanevents[evt_code].parmsize != evt_sz)) {
8330 RT_TRACE(_module_rtl871x_cmd_c_, _drv_err_,
8331 ("\nEvent(%d) Parm Size mismatch (%d vs %d)!\n",
8332 evt_code, wlanevents[evt_code].parmsize, evt_sz));
8333 goto _abort_event_;
8334 }
This warning results because the number of items in "enum rtw_c2h_event",
which determines the value of MAX_C2HEVT, is one more than in "struct wlanevents".
Adding an extra dummy event to the latter fixes the problem.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Smatch reports the following warning:
"drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c:2008
Hal_ReadPowerValueFromPROM_8188E()
error: buffer overflow 'pwrInfo24G->IndexBW40_Base[rfPath]' 5 <= 5"
drivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c
2005 /* 2.4G default value */
2006 for (group = 0; group < MAX_CHNL_GROUP_24G; group++) {
2007 pwrInfo24G->IndexCCK_Base[rfPath][group] = EEPROM_DEFAULT_24G_INDEX;
2008 pwrInfo24G->IndexBW40_Base[rfPath][group] = EEPROM_DEFAULT_24G_INDEX;
The reason is that IndexCCK_Base[] has MAX_CHNL_GROUP_24G elements, but
IndexBW40_Base is smaller by 1. Make them both have MAX_CHNL_GROUP_24G
elements.
Reported by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mips allmodconfig fails with
ERROR: "copy_from_user_page" [drivers/staging/lustre/lustre/libcfs/libcfs.ko]
undefined!
which is due to LUSTRE using copy_from_user_page which is not exported by any
architecture. Unfortunately, LUSTRE can only be built as module, so there is no
easy fix.
MIPS, SH, and optionally XTENSA implement copy_from_user_page as unexported
functions. Disable LUSTRE for those.
Cc: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit c70bda992c.
It's incorrect, Kay writes:
Please just remove it. "devname" is meant to be used for
single-instance devices with a static dev_t, never for things
like zramX.
It will not do anything useful here, it does nothing really
without a statically assigned dev_t, and it should not be used
for devices of this kind anyway.
Reported-by: Tom Gundersen <teg@jklm.no>
Reported-by: Kay Sievers <kay@vrfy.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
