Re: [PATCH v4 2/2] mailbox: arm_mhuv3: Add driver

[Cristian Marussi <cristian.marussi@arm.com>]

On Mon, Apr 15, 2024 at 09:56:52PM +0800, kernel test robot wrote:
> Hi Cristian,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on robh/for-next]
> [also build test ERROR on soc/for-next linus/master v6.9-rc4 next-20240415]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Cristian-Marussi/dt-bindings-mailbox-arm-mhuv3-Add-bindings/20240415-094106
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
> patch link:    https://lore.kernel.org/r/20240412192801.554464-3-cristian.marussi%40arm.com
> patch subject: [PATCH v4 2/2] mailbox: arm_mhuv3: Add driver
> config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20240415/202404152144.RtJxmEsQ-lkp@intel.com/config)
> compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240415/202404152144.RtJxmEsQ-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202404152144.RtJxmEsQ-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/mailbox/arm_mhuv3.c: In function 'mhuv3_mbx_comb_interrupt':
> >> drivers/mailbox/arm_mhuv3.c:922:17: error: cleanup argument not a function
>      922 |                 void *data __free(kfree) = NULL;
>          |                 ^~~~

Right, I suppose is missing slab.h to define kfree now that it is using
cleanup.h.

I'll fix in V5, after some more possible feedback comes in...

Thanks,
Cristian

> 
> 
> vim +922 drivers/mailbox/arm_mhuv3.c
> 
>    910	
>    911	static irqreturn_t mhuv3_mbx_comb_interrupt(int irq, void *arg)
>    912	{
>    913		unsigned int i, found = 0;
>    914		struct mhuv3 *mhu = arg;
>    915		struct mbox_chan *chan;
>    916		struct device *dev;
>    917		int ret = IRQ_NONE;
>    918	
>    919		dev = mhu->mbox.dev;
>    920		for (i = 0; i < NUM_EXT; i++) {
>    921			struct mhuv3_mbox_chan_priv *priv;
>  > 922			void *data __free(kfree) = NULL;
>    923	
>    924			if (!mhu->ext[i])
>    925				continue;
>    926	
>    927			/* Process any extension which could be source of the IRQ */
>    928			chan = mhu->ext[i]->chan_from_comb_irq_get(mhu);
>    929			if (IS_ERR(chan))
>    930				continue;
>    931	
>    932			found++;
>    933			/* From here on we need to call rx_complete even on error */
>    934			priv = chan->con_priv;
>    935			if (!chan->cl) {
>    936				dev_warn(dev, "RX Data on UNBOUND channel (%u)\n",
>    937					 priv->ch_idx);
>    938				goto rx_ack;
>    939			}
>    940	
>    941			/* Read optional in-band LE data first. */
>    942			if (priv->ops->read_data) {
>    943				data = priv->ops->read_data(mhu, chan);
>    944				if (IS_ERR(data)) {
>    945					dev_err(dev,
>    946						"Failed to read in-band data. err:%ld\n",
>    947						PTR_ERR(no_free_ptr(data)));
>    948					goto rx_ack;
>    949				}
>    950			}
>    951	
>    952			mbox_chan_received_data(chan, data);
>    953			ret = IRQ_HANDLED;
>    954	
>    955			/*
>    956			 * Acknowledge transfer after any possible optional
>    957			 * out-of-band data has also been retrieved via
>    958			 * mbox_chan_received_data().
>    959			 */
>    960	rx_ack:
>    961			if (priv->ops->rx_complete)
>    962				priv->ops->rx_complete(mhu, chan);
>    963		}
>    964	
>    965		if (found == 0)
>    966			dev_warn_once(dev, "Failed to find channel for the RX interrupt\n");
>    967	
>    968		return ret;
>    969	}
>    970	
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki