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| author |   Dan Elkouby <streetwalkermc@gmail.com> | 2019-09-06 14:06:44 +0300 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2019-09-06 15:55:40 +0200 |
| commit | 8bb3537095f107ed55ad51f6241165b397aaafac (patch) | |
| tree | 4d1ed7c09cb08e75f92b4efc2f83e6c75bf15acb /drivers/hid | |
| parent | Bluetooth: btusb: Use cmd_timeout to reset Realtek device (diff) | |
| download | linux-dev-8bb3537095f107ed55ad51f6241165b397aaafac.tar.xz linux-dev-8bb3537095f107ed55ad51f6241165b397aaafac.zip | |
Bluetooth: hidp: Fix assumptions on the return value of hidp_send_message
hidp_send_message was changed to return non-zero values on success,
which some other bits did not expect. This caused spurious errors to be
propagated through the stack, breaking some drivers, such as hid-sony
for the Dualshock 4 in Bluetooth mode.
As pointed out by Dan Carpenter, hid-microsoft directly relied on that
assumption as well.
Fixes: 48d9cc9d85dd ("Bluetooth: hidp: Let hidp_send_message return number of queued bytes")
Signed-off-by: Dan Elkouby <streetwalkermc@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-microsoft.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/hid-microsoft.c b/drivers/hid/hid-microsoft.c index 8b3a922bdad3..2cf83856f2e4 100644 --- a/drivers/hid/hid-microsoft.c +++ b/drivers/hid/hid-microsoft.c @@ -303,7 +303,7 @@ static void ms_ff_worker(struct work_struct *work) r->magnitude[MAGNITUDE_WEAK] = ms->weak; /* right actuator */ ret = hid_hw_output_report(hdev, (__u8 *)r, sizeof(*r)); - if (ret) + if (ret < 0) hid_warn(hdev, "failed to send FF report\n"); } |