diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-12-02 15:32:09 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-12-05 15:43:37 +0100 |
| commit | 0307f4e8fff5518f2e123f992b4cd089813dc18c (patch) | |
| tree | deffce27b6dbca3ae8c0d99e57b0496e8ee21436 /drivers/base/power/runtime.c | |
| parent | bc80c2e438dcbfcf748452ec0f7ad5b79ff3ad88 (diff) | |
| download | linux-0307f4e8fff5518f2e123f992b4cd089813dc18c.tar.bz2 | |
PM: runtime: Relocate rpm_callback() right after __rpm_callback()
Because rpm_callback() is a wrapper around __rpm_callback(), and the
only caller of it after the change eliminating an invocation of it
from rpm_idle(), move the former next to the latter to make the code
a bit easier to follow.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Diffstat (limited to 'drivers/base/power/runtime.c')
| -rw-r--r-- | drivers/base/power/runtime.c | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 14088b5adb55..5a5cd1d8c4a9 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -422,6 +422,38 @@ fail: } /** + * rpm_callback - Run a given runtime PM callback for a given device. + * @cb: Runtime PM callback to run. + * @dev: Device to run the callback for. + */ +static int rpm_callback(int (*cb)(struct device *), struct device *dev) +{ + int retval; + + if (dev->power.memalloc_noio) { + unsigned int noio_flag; + + /* + * Deadlock might be caused if memory allocation with + * GFP_KERNEL happens inside runtime_suspend and + * runtime_resume callbacks of one block device's + * ancestor or the block device itself. Network + * device might be thought as part of iSCSI block + * device, so network device and its ancestor should + * be marked as memalloc_noio too. + */ + noio_flag = memalloc_noio_save(); + retval = __rpm_callback(cb, dev); + memalloc_noio_restore(noio_flag); + } else { + retval = __rpm_callback(cb, dev); + } + + dev->power.runtime_error = retval; + return retval != -EACCES ? retval : -EIO; +} + +/** * rpm_idle - Notify device bus type if the device can be suspended. * @dev: Device to notify the bus type about. * @rpmflags: Flag bits. @@ -505,38 +537,6 @@ static int rpm_idle(struct device *dev, int rpmflags) } /** - * rpm_callback - Run a given runtime PM callback for a given device. - * @cb: Runtime PM callback to run. - * @dev: Device to run the callback for. - */ -static int rpm_callback(int (*cb)(struct device *), struct device *dev) -{ - int retval; - - if (dev->power.memalloc_noio) { - unsigned int noio_flag; - - /* - * Deadlock might be caused if memory allocation with - * GFP_KERNEL happens inside runtime_suspend and - * runtime_resume callbacks of one block device's - * ancestor or the block device itself. Network - * device might be thought as part of iSCSI block - * device, so network device and its ancestor should - * be marked as memalloc_noio too. - */ - noio_flag = memalloc_noio_save(); - retval = __rpm_callback(cb, dev); - memalloc_noio_restore(noio_flag); - } else { - retval = __rpm_callback(cb, dev); - } - - dev->power.runtime_error = retval; - return retval != -EACCES ? retval : -EIO; -} - -/** * rpm_suspend - Carry out runtime suspend of given device. * @dev: Device to suspend. * @rpmflags: Flag bits. |