kernel/linux.git/drivers/watchdog, branch v3.18.62

watchdog: bcm281xx: Fix use of uninitialized spinlock.

2017-07-05T12:35:14+00:00

commit fedf266f9955d9a019643cde199a2fd9a0259f6f upstream. The bcm_kona_wdt_set_resolution_reg() call takes the spinlock, so initialize it earlier. Fixes a warning at boot with lock debugging enabled. Fixes: 6adb730dc208 ("watchdog: bcm281xx: Watchdog Driver") Signed-off-by: Eric Anholt Reviewed-by: Florian Fainelli Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Greg Kroah-Hartman

watchdog: pcwd_usb: fix NULL-deref at probe

2017-05-25T12:17:56+00:00

commit 46c319b848268dab3f0e7c4a5b6e9146d3bca8a4 upstream. Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Johan Hovold Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Greg Kroah-Hartman

watchdog: rc32434_wdt: fix ioctl error handling

2016-04-18T12:49:21+00:00

[ Upstream commit 10e7ac22cdd4d211cef99afcb9371b70cb175be6 ] Calling return copy_to_user(...) in an ioctl will not do the right thing if there's a pagefault: copy_to_user returns the number of bytes not copied in this case. Fix up watchdog/rc32434_wdt to do return copy_to_user(...)) ? -EFAULT : 0; instead. Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Sasha Levin

watchdog: sunxi: fix activation of system reset

2015-10-28T02:12:58+00:00

[ Upstream commit 0919e4445190da18496d31aac08b90828a47d45f ] Commit f2147de33470 ("watchdog: sunxi: support parameterized compatible strings") introduced a regression in sunxi_wdt_start(), by which the system reset function of the watchdog is not enabled upon starting the watchdog. As a result, the system is not reset when the watchdog expires. Fix it. Fixes: f2147de33470 ("watchdog: sunxi: support parameterized compatible strings") Signed-off-by: Francesco Lavra Acked-by: Maxime Ripard Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Cc: stable@vger.kernel.org Signed-off-by: Sasha Levin

watchdog: omap: assert the counter being stopped before reprogramming

2015-08-04T18:39:52+00:00

[ Upstream commit 530c11d432727c697629ad5f9d00ee8e2864d453 ] The omap watchdog has the annoying behaviour that writes to most registers don't have any effect when the watchdog is already running. Quoting the AM335x reference manual: To modify the timer counter value (the WDT_WCRR register), prescaler ratio (the WDT_WCLR[4:2] PTV bit field), delay configuration value (the WDT_WDLY[31:0] DLY_VALUE bit field), or the load value (the WDT_WLDR[31:0] TIMER_LOAD bit field), the watchdog timer must be disabled by using the start/stop sequence (the WDT_WSPR register). Currently the timer is stopped in the .probe callback but still there are possibilities that yield to a situation where omap_wdt_start is entered with the timer running (e.g. when /dev/watchdog is closed without stopping and then reopened). In such a case programming the timeout silently fails! To circumvent this stop the timer before reprogramming. Assuming one of the first things the watchdog user does is setting the timeout explicitly nothing too bad should happen because this explicit setting works fine. Fixes: 7768a13c252a ("[PATCH] OMAP: Add Watchdog driver support") Signed-off-by: Uwe Kleine-König Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Sasha Levin

watchdog: s3c2410_wdt: Fix the mask bit offset for Exynos7

2014-12-05T19:21:35+00:00

The watchdog mask bit offset listed for Exynos7 is incorrect. Fix this. Signed-off-by: Abhilash Kesavan Acked-by: Naveen Krishna Chatradhi Signed-off-by: Wim Van Sebroeck

watchdog: meson: remove magic value for reboot

2014-10-20T19:09:17+00:00

This patch removes the magic value used for rebooting the board. This value is useless and leads to a static checker warning as reported by Dan Carpenter. Signed-off-by: Carlo Caione Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Let XILINX_WATCHDOG and TEGRA_WATCHDOG depend on HAS_IOMEM

2014-10-20T19:08:53+00:00

They need HAS_IOMEM, so let them depend on it, the related error (with allmodconfig under um): MODPOST 1205 modules ERROR: "devm_ioremap_resource" [drivers/watchdog/tegra_wdt.ko] undefined! ERROR: "devm_ioremap_resource" [drivers/watchdog/of_xilinx_wdt.ko] undefined! Signed-off-by: Chen Gang Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: sunxi: Add A31 watchdog support

2014-10-20T19:07:14+00:00

This patch adds support for the watchdog hardware found in A31 and newer SoCs. This new hardware has registers at different offsets, and the system reset control has been split out of the "mode" register into a new "configuration" register. Differences not supported by this driver include separate interrupt lines for each watchdog, instead of sharing an interrupt line and registers with the timer block. Signed-off-by: Chen-Yu Tsai Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: sunxi: support parameterized compatible strings

2014-10-20T19:06:59+00:00

This patch adds support for hardware parameters tied to compatible strings, so similar hardware can reuse the driver. This will be used to support the newer watchdog found in A31 and later SoCs. Differences in the new hardware include separate interrupt lines for each watchdog, and corresponding interrupt control/status registers. Watchdog control registers were also slightly rearranged. Also replace ioread32()/iowrite32() with readl()/writel() in various places changed. Signed-off-by: Chen-Yu Tsai Signed-off-by: Guenter Roeck Acked-by: Heiko Stuebner Signed-off-by: Wim Van Sebroeck Signed-off-by: Andrew Morton