drxk: allow loading firmware synchrousnously

Due to udev-182, the firmware load was changed to be async, as
otherwise udev would give up of loading a firmware.

Add an option to return to the previous behaviour, async firmware
loads cause failures with the tda18271 driver.

Antti tested it with the following hardware:
        Hauppauge WinTV HVR 930C
        MaxMedia UB425-TC
        PCTV QuatroStick nano (520e)

Tested-by: Antti Palosaari <crope@iki.fi>
Cc: stable@kernel.org #	for Kernel 3.6 - please note that driver location has changed
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 15 insertions, 5 deletions

diff --git a/drivers/media/dvb-frontends/drxk_hard.c b/drivers/media/dvb-frontends/drxk_hard.c
index 1ab8154..8b4c6d5 100644
--- a/drivers/media/dvb-frontends/drxk_hard.c
+++ b/drivers/media/dvb-frontends/drxk_hard.c
@@ -6609,15 +6609,25 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config,
 
 	/* Load firmware and initialize DRX-K */
 	if (state->microcode_name) {
-		status = request_firmware_nowait(THIS_MODULE, 1,
+		if (config->load_firmware_sync) {
+			const struct firmware *fw = NULL;
+
+			status = request_firmware(&fw, state->microcode_name,
+						  state->i2c->dev.parent);
+			if (status < 0)
+				fw = NULL;
+			load_firmware_cb(fw, state);
+		} else {
+			status = request_firmware_nowait(THIS_MODULE, 1,
 					      state->microcode_name,
 					      state->i2c->dev.parent,
 					      GFP_KERNEL,
 					      state, load_firmware_cb);
-		if (status < 0) {
-			printk(KERN_ERR
-			"drxk: failed to request a firmware\n");
-			return NULL;
+			if (status < 0) {
+				printk(KERN_ERR
+				       "drxk: failed to request a firmware\n");
+				return NULL;
+			}
 		}
 	} else if (init_drxk(state) < 0)
 		goto error;