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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: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Kishon Vijay Abraham I 2017-08-18 20:27:57 +05:30 committed by Bjorn Helgaas
parent 52c9285d47
commit 09232c7acb
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/endpoint/functions/pci-epf-test.c
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@ -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;