diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2014-09-30 10:48:32 -0700 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2014-11-17 03:07:09 +0100 |
| commit | 8f57f2310f6b5f787a29e4eb440afd8b3f6b2554 (patch) | |
| tree | 3798effb74187f9c7814525b73bd406e08d5c618 /drivers/power/reset | |
| parent | 745e19764a0cff55a55010cfabe7e9ff77fa72a5 (diff) | |
power/reset: xgene: Register with kernel restart handler
Register with kernel restart handler instead of setting arm_pm_restart directly.
This patch also addresses the following compile warning.
drivers/power/reset/xgene-reboot.c: In function 'xgene_reboot_probe':
drivers/power/reset/xgene-reboot.c:77:17: warning:
assignment from incompatible pointer type [enabled by default]
The warning was due to a mismatch between the type of arm_pm_restart
and the restart function.
Cc: Loc Ho <lho@apm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/power/reset')
| -rw-r--r-- | drivers/power/reset/xgene-reboot.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/power/reset/xgene-reboot.c b/drivers/power/reset/xgene-reboot.c index 9da341d11caf..b0e5002f8deb 100644 --- a/drivers/power/reset/xgene-reboot.c +++ b/drivers/power/reset/xgene-reboot.c @@ -26,38 +26,43 @@ */ #include <linux/delay.h> #include <linux/io.h> +#include <linux/notifier.h> #include <linux/of_device.h> #include <linux/of_address.h> #include <linux/platform_device.h> +#include <linux/reboot.h> #include <linux/stat.h> #include <linux/slab.h> -#include <asm/system_misc.h> struct xgene_reboot_context { struct device *dev; void *csr; u32 mask; + struct notifier_block restart_handler; }; -static struct xgene_reboot_context *xgene_restart_ctx; - -static void xgene_restart(enum reboot_mode mode, const char *cmd) +static int xgene_restart_handler(struct notifier_block *this, + unsigned long mode, void *cmd) { - struct xgene_reboot_context *ctx = xgene_restart_ctx; + struct xgene_reboot_context *ctx = + container_of(this, struct xgene_reboot_context, + restart_handler); /* Issue the reboot */ - if (ctx) - writel(ctx->mask, ctx->csr); + writel(ctx->mask, ctx->csr); mdelay(1000); dev_emerg(ctx->dev, "Unable to restart system\n"); + + return NOTIFY_DONE; } static int xgene_reboot_probe(struct platform_device *pdev) { struct xgene_reboot_context *ctx; struct device *dev = &pdev->dev; + int err; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) @@ -73,10 +78,13 @@ static int xgene_reboot_probe(struct platform_device *pdev) ctx->mask = 0xFFFFFFFF; ctx->dev = dev; - arm_pm_restart = xgene_restart; - xgene_restart_ctx = ctx; + ctx->restart_handler.notifier_call = xgene_restart_handler; + ctx->restart_handler.priority = 128; + err = register_restart_handler(&ctx->restart_handler); + if (err) + dev_err(dev, "cannot register restart handler (err=%d)\n", err); - return 0; + return err; } static struct of_device_id xgene_reboot_of_match[] = { |