tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: eeb611e5394c56d45c5cc8f7dc484c9f19e93143 commit: 2baf6e1cd6f179dd497cfc10294920e99bc3a66e [39/1142] dmaengine: dw-axi-dma: support slave dma mode config: i386-randconfig-m021-20210215 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
smatch warnings:
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c:941 axi_chan_handle_err() warn:
inconsistent returns 'chan->vc.lock'.
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c:941 axi_chan_handle_err() warn:
inconsistent returns 'flags'.
vim +941 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 913 static noinline void
axi_chan_handle_err(struct axi_dma_chan *chan, u32 status)
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 914 {
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 915 struct virt_dma_desc
*vd;
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 916 unsigned long flags;
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 917
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 918
spin_lock_irqsave(&chan->vc.lock, flags);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 919
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 920 axi_chan_disable(chan);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 921
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 922 /* The bad descriptor
currently is in the head of vc list */
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 923 vd =
vchan_next_desc(&chan->vc);
2baf6e1cd6f179 Sia Jee Heng 2020-06-26 924 if (!vd)
2baf6e1cd6f179 Sia Jee Heng 2020-06-26 925 return;
unlock and restore IRQs before returning.
2baf6e1cd6f179 Sia Jee Heng 2020-06-26 926
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 927 /* Remove the completed
descriptor from issued list */
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 928 list_del(&vd->node);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 929
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 930 /* WARN about bad
descriptor */
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 931 dev_err(chan2dev(chan),
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 932 "Bad descriptor
submitted for %s, cookie: %d, irq: 0x%08x\n",
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 933
axi_chan_name(chan), vd->tx.cookie, status);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 934
axi_chan_list_dump_lli(chan, vd_to_axi_desc(vd));
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 935
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 936
vchan_cookie_complete(vd);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 937
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 938 /* Try to restart the
controller */
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 939
axi_chan_start_first_queued(chan);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 940
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 @941
spin_unlock_irqrestore(&chan->vc.lock, flags);
1fe20f1b84548b Eugeniy Paltsev 2018-03-06 942 }
---
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