Timeouts are not expected to happen and are handled as fatal errors. Increase all timeouts to 1 second as defensive measure to avoid relying on the timing behaviour of certain firmware versions or configurations.
Signed-off-by: Janne Grunau j@jannau.net ---
arch/arm/mach-apple/rtkit.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-apple/rtkit.c b/arch/arm/mach-apple/rtkit.c index da7771844230..a550b553b663 100644 --- a/arch/arm/mach-apple/rtkit.c +++ b/arch/arm/mach-apple/rtkit.c @@ -52,6 +52,8 @@ #define APPLE_RTKIT_BUFFER_REQUEST_SIZE GENMASK(51, 44) #define APPLE_RTKIT_BUFFER_REQUEST_IOVA GENMASK(41, 0)
+#define TIMEOUT_1SEC_US 1000000 + struct apple_rtkit { struct mbox_chan *chan; void *cookie; @@ -168,7 +170,7 @@ int apple_rtkit_boot(struct apple_rtkit *rtk) return ret;
/* Wait for protocol version negotiation message. */ - ret = mbox_recv(rtk->chan, &msg, 10000); + ret = mbox_recv(rtk->chan, &msg, TIMEOUT_1SEC_US); if (ret < 0) return ret;
@@ -210,7 +212,7 @@ int apple_rtkit_boot(struct apple_rtkit *rtk)
wait_epmap: /* Wait for endpoint map message. */ - ret = mbox_recv(rtk->chan, &msg, 10000); + ret = mbox_recv(rtk->chan, &msg, TIMEOUT_1SEC_US); if (ret < 0) return ret;
@@ -275,7 +277,7 @@ wait_epmap:
pwrstate = APPLE_RTKIT_PWR_STATE_SLEEP; while (pwrstate != APPLE_RTKIT_PWR_STATE_ON) { - ret = mbox_recv(rtk->chan, &msg, 100000); + ret = mbox_recv(rtk->chan, &msg, TIMEOUT_1SEC_US); if (ret < 0) return ret;
@@ -330,7 +332,7 @@ int apple_rtkit_shutdown(struct apple_rtkit *rtk, int pwrstate) if (ret < 0) return ret;
- ret = mbox_recv(rtk->chan, &msg, 100000); + ret = mbox_recv(rtk->chan, &msg, TIMEOUT_1SEC_US); if (ret < 0) return ret;