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Commit 09232c7a authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Bjorn Helgaas
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PCI: endpoint: Add "volatile" to pci_epf_test_reg 



struct pci_epf_test_reg is the MEMSPACE of pci-epf-test function driver
that will be accessed by the "host" for programming the pci-epf-test
device. So this structure shouldn't be subjected to compiler optimization
in pci_epf_test_cmd_handler() since the values can be changed by code
outside the scope of current code at any time.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 52c9285d

drivers/pci/endpoint/functions/pci-epf-test.c

+1 −1
Original line number Diff line number Diff line
@@ -267,7 +267,7 @@ static void pci_epf_test_cmd_handler(struct work_struct *work) 
						     cmd_handler.work);

	struct pci_epf *epf = epf_test->epf;

	struct pci_epc *epc = epf->epc;

	struct pci_epf_test_reg *reg = epf_test->reg[0];

	volatile struct pci_epf_test_reg *reg = epf_test->reg[0];



	if (!reg->command)

		goto reset_handler;