diff options
Diffstat (limited to 'drivers/pci/hotplug')
-rw-r--r-- | drivers/pci/hotplug/pciehp_hpc.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index c030c94a4acb..36ea9499e385 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c | |||
@@ -252,20 +252,23 @@ static inline int pcie_poll_cmd(struct controller *ctrl) | |||
252 | u16 slot_status; | 252 | u16 slot_status; |
253 | int timeout = 1000; | 253 | int timeout = 1000; |
254 | 254 | ||
255 | if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) | 255 | if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) { |
256 | if (slot_status & CMD_COMPLETED) | 256 | if (slot_status & CMD_COMPLETED) { |
257 | goto completed; | 257 | pciehp_writew(ctrl, SLOTSTATUS, CMD_COMPLETED); |
258 | for (timeout = 1000; timeout > 0; timeout -= 100) { | 258 | return 1; |
259 | } | ||
260 | } | ||
261 | while (timeout > 1000) { | ||
259 | msleep(100); | 262 | msleep(100); |
260 | if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) | 263 | timeout -= 100; |
261 | if (slot_status & CMD_COMPLETED) | 264 | if (!pciehp_readw(ctrl, SLOTSTATUS, &slot_status)) { |
262 | goto completed; | 265 | if (slot_status & CMD_COMPLETED) { |
266 | pciehp_writew(ctrl, SLOTSTATUS, CMD_COMPLETED); | ||
267 | return 1; | ||
268 | } | ||
269 | } | ||
263 | } | 270 | } |
264 | return 0; /* timeout */ | 271 | return 0; /* timeout */ |
265 | |||
266 | completed: | ||
267 | pciehp_writew(ctrl, SLOTSTATUS, CMD_COMPLETED); | ||
268 | return timeout; | ||
269 | } | 272 | } |
270 | 273 | ||
271 | static inline void pcie_wait_cmd(struct controller *ctrl, int poll) | 274 | static inline void pcie_wait_cmd(struct controller *ctrl, int poll) |