From: Andrzej Hajda <a.hajda@samsung.com>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>
Cc: kernel@pengutronix.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] driver core: add helper for deferred probe reason setting
Date: Mon, 22 Mar 2021 09:20:40 +0100 [thread overview]
Message-ID: <ce5a505b-d79c-c8c5-4561-7b8961cfa9d4@samsung.com> (raw)
In-Reply-To: <20210318073921.13093-2-a.fatoum@pengutronix.de>
W dniu 18.03.2021 o 08:39, Ahmad Fatoum pisze:
> We now have three places within the same file doing the same operation
> of freeing this pointer and setting it anew. A helper make this
> arguably easier to read, so add one.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Regards
Andrzej
> ---
> drivers/base/dd.c | 17 +++++++++++------
> 1 file changed, 11 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/base/dd.c b/drivers/base/dd.c
> index e2cf3b29123e..4201baa1cc13 100644
> --- a/drivers/base/dd.c
> +++ b/drivers/base/dd.c
> @@ -69,6 +69,12 @@ 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.
> */
> @@ -97,8 +103,7 @@ 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
> @@ -140,8 +145,7 @@ 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);
> }
> @@ -220,11 +224,12 @@ 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);
> }
next prev parent reply other threads:[~2021-03-22 8:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 7:39 [PATCH 1/2] driver core: clear deferred probe reason on probe retry Ahmad Fatoum
2021-03-18 7:39 ` [PATCH 2/2] driver core: add helper for deferred probe reason setting Ahmad Fatoum
2021-03-22 8:20 ` Andrzej Hajda [this message]
2021-03-18 12:47 ` [PATCH 1/2] driver core: clear deferred probe reason on probe retry Andy Shevchenko
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