If an error happens on the device, the driver will no longer fall
into the trap of reading this status 60 times before it decides that
this reply won't change to success/memory full.
Greatly reduces communication overhead during device error situation.
Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@xxxxxxxxx>
---
drivers/hid/usbhid/hid-pidff.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c
index e2508a4d754d..d5734cbf745d 100644
--- a/drivers/hid/usbhid/hid-pidff.c
+++ b/drivers/hid/usbhid/hid-pidff.c
@@ -138,7 +138,8 @@ static const u8 pidff_effect_types[] = {
#define PID_BLOCK_LOAD_SUCCESS 0
#define PID_BLOCK_LOAD_FULL 1
-static const u8 pidff_block_load_status[] = { 0x8c, 0x8d };
+#define PID_BLOCK_LOAD_ERROR 2
+static const u8 pidff_block_load_status[] = { 0x8c, 0x8d, 0x8e};
#define PID_EFFECT_START 0
#define PID_EFFECT_STOP 1
@@ -666,6 +667,11 @@ static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum)
pidff->block_load[PID_RAM_POOL_AVAILABLE].value[0] : -1);
return -ENOSPC;
}
+ if (pidff->block_load_status->value[0] ==
+ pidff->status_id[PID_BLOCK_LOAD_ERROR]) {
+ hid_dbg(pidff->hid, "device error during effect creation\n");
+ return -EREMOTEIO;
+ }
}
hid_err(pidff->hid, "pid_block_load failed 60 times\n");
return -EIO;
--
2.48.1
