tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c636eef2ee3696f261a35f34989842701a107895 commit: 7cbb0c63de3fc218fd06ecfedb477772a4d12f76 dmaengine: xilinx: dpdma: Add the Xilinx DisplayPort DMA engine driver date: 4 weeks ago config: h8300-randconfig-m031-20200811 (attached as .config) compiler: h8300-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> smatch warnings: drivers/dma/xilinx/xilinx_dpdma.c:1172 xilinx_dpdma_synchronize() error: double unlocked 'chan->vchan.lock' (orig line 1170) vim +1172 drivers/dma/xilinx/xilinx_dpdma.c 1140 1141 /** 1142 * xilinx_dpdma_synchronize - Synchronize callback execution 1143 * @dchan: DMA channel 1144 * 1145 * Synchronizing callback execution ensures that all previously issued 1146 * transfers have completed and all associated callbacks have been called and 1147 * have returned. 1148 * 1149 * This function waits for the DMA channel to stop. It assumes it has been 1150 * paused by a previous call to dmaengine_terminate_async(), and that no new 1151 * pending descriptors have been issued with dma_async_issue_pending(). The 1152 * behaviour is undefined otherwise. 1153 */ 1154 static void xilinx_dpdma_synchronize(struct dma_chan *dchan) 1155 { 1156 struct xilinx_dpdma_chan *chan = to_xilinx_chan(dchan); 1157 unsigned long flags; 1158 1159 xilinx_dpdma_chan_stop(chan); 1160 1161 spin_lock_irqsave(&chan->vchan.lock, flags); 1162 if (chan->desc.pending) { 1163 vchan_terminate_vdesc(&chan->desc.pending->vdesc); 1164 chan->desc.pending = NULL; 1165 } 1166 if (chan->desc.active) { 1167 vchan_terminate_vdesc(&chan->desc.active->vdesc); 1168 chan->desc.active = NULL; 1169 } > 1170 spin_unlock_irqrestore(&chan->vchan.lock, flags); 1171 > 1172 vchan_synchronize(&chan->vchan); 1173 } 1174 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
