Unverified Commit 1dafb29c authored Oct 29, 2024 by openeuler-ci-bot Committed by Gitee Oct 29, 2024

!12331 LoongArch: prevent LS7A Bus Master clearing on kexec

Merge Pull Request from: @ci-robot 
 
PR sync from: Hongchen Zhang <zhanghongchen@loongson.cn>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/FRPWN4NBX6B7SB6NG2EUO4UIRWCPPKAA/ 
 
https://gitee.com/openeuler/kernel/issues/IAZ3M1 
 
Link:https://gitee.com/openeuler/kernel/pulls/12331

 

Reviewed-by: Juxin Gao <gaojuxin@loongson.cn>
Signed-off-by: Zhang Peng <zhangpeng362@huawei.com>

parents d007cc92 c879b2f1

drivers/pci/pci-driver.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -526,7 +526,11 @@ static void pci_device_shutdown(struct device *dev)
		* If it is not a kexec reboot, firmware will hit the PCI
		* devices with big hammer and stop their DMA any way.
		*/
		#ifdef CONFIG_LOONGARCH
		if (kexec_in_progress && !pci_is_bridge(pci_dev) && (pci_dev->current_state <= PCI_D3hot))
		#else
		if (kexec_in_progress && (pci_dev->current_state <= PCI_D3hot))
		#endif
		pci_clear_master(pci_dev);
		}