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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2021-03-23 16:37:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-05 13:17:01 +0200 |
| commit | 72a91f192da032b68519fafaecce03fd002d669a (patch) | |
| tree | c06090f5a8f0f2f6488f6ca8770bcb0cb64a7bb0 /drivers/base/dd.c | |
| parent | d46f3e3ed5276e756caf40f760d4902d15c12dcb (diff) | |
| download | linux-72a91f192da032b68519fafaecce03fd002d669a.tar.bz2 | |
driver core: add helper for deferred probe reason setting
We now have three places within the same file doing the same operation
of freeing this pointer and setting it anew. A helper makes this
arguably easier to read, so add one.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.kernel.org/r/20210323153714.25120-2-a.fatoum@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 59113543a154..2f00d1d5b414 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -68,6 +68,12 @@ static char async_probe_drv_names[ASYNC_DRV_NAMES_MAX_LEN]; */ static bool defer_all_probes; +static void __device_set_deferred_probe_reason(const struct device *dev, char *reason) +{ + kfree(dev->p->deferred_probe_reason); + dev->p->deferred_probe_reason = reason; +} + /* * deferred_probe_work_func() - Retry probing devices in the active list. */ @@ -96,8 +102,7 @@ static void deferred_probe_work_func(struct work_struct *work) get_device(dev); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = NULL; + __device_set_deferred_probe_reason(dev, NULL); /* * Drop the mutex while probing each device; the probe path may @@ -142,8 +147,7 @@ void driver_deferred_probe_del(struct device *dev) if (!list_empty(&dev->p->deferred_probe)) { dev_dbg(dev, "Removed from deferred list\n"); list_del_init(&dev->p->deferred_probe); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = NULL; + __device_set_deferred_probe_reason(dev, NULL); } mutex_unlock(&deferred_probe_mutex); } @@ -222,11 +226,12 @@ void device_unblock_probing(void) void device_set_deferred_probe_reason(const struct device *dev, struct va_format *vaf) { const char *drv = dev_driver_string(dev); + char *reason; mutex_lock(&deferred_probe_mutex); - kfree(dev->p->deferred_probe_reason); - dev->p->deferred_probe_reason = kasprintf(GFP_KERNEL, "%s: %pV", drv, vaf); + reason = kasprintf(GFP_KERNEL, "%s: %pV", drv, vaf); + __device_set_deferred_probe_reason(dev, reason); mutex_unlock(&deferred_probe_mutex); } |