Remove hid_output_raw_report() call as it is not a ll_driver callbacj,
and switch to the hid_hw_* implementation. USB-HID used to fallback
into SET_REPORT when there were no output interrupt endpoint,
so emulating this if hid_hw_output_report() returns -ENOSYS.
Reviewed-by: David Herrmann <dh.herrm...@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoi...@redhat.com>
---
ex 12/14
v2:
- get rid of the test regarding .raw_request now that it is mandatory.
drivers/hid/hidraw.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index f8708c9..2cc484c 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -123,10 +123,6 @@ static ssize_t hidraw_send_report(struct file *file, const
char __user *buffer,
dev = hidraw_table[minor]->hid;
- if (!dev->hid_output_raw_report) {
- ret = -ENODEV;
- goto out;
- }
if (count > HID_MAX_BUFFER_SIZE) {
hid_warn(dev, "pid %d passed too large report\n",
@@ -153,7 +149,20 @@ static ssize_t hidraw_send_report(struct file *file, const
char __user *buffer,
goto out_free;
}
- ret = hid_output_raw_report(dev, buf, count, report_type);
+ if (report_type == HID_OUTPUT_REPORT) {
+ ret = hid_hw_output_report(dev, buf, count);
+ /*
+ * compatibility with old implementation of USB-HID and I2C-HID:
+ * if the device does not support receiving output reports,
+ * on an interrupt endpoint, fallback to SET_REPORT HID command.
+ */
+ if (ret != -ENOSYS)
+ goto out_free;
+ }
+
+ ret = hid_hw_raw_request(dev, buf[0], buf, count, report_type,
+ HID_REQ_SET_REPORT);
+
out_free:
kfree(buf);
out:
--
1.8.5.3
--
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