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drxk: allow loading firmware synchrousnously

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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>
This commit is contained in:
Mauro Carvalho Chehab 2012-10-02 16:01:15 -03:00
parent 6ae5e06084
commit 8e30783b0b
2 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/dvb-frontends/drxk.h
View File

@ -28,6 +28,7 @@
* A value of 0 (default) or lower indicates that * A value of 0 (default) or lower indicates that
* the correct number of parameters will be * the correct number of parameters will be
* automatically detected. * automatically detected.
* @load_firmware_sync: Force the firmware load to be synchronous.
* *
* On the *_gpio vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is * On the *_gpio vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is
* UIO-3. * UIO-3.
@ -39,6 +40,7 @@ struct drxk_config {
bool parallel_ts; bool parallel_ts;
bool dynamic_clk; bool dynamic_clk;
bool enable_merr_cfg; bool enable_merr_cfg;
bool load_firmware_sync;
bool antenna_dvbt; bool antenna_dvbt;
u16 antenna_gpio; u16 antenna_gpio;

20
drivers/media/dvb-frontends/drxk_hard.c
View File

@ -6609,15 +6609,25 @@ struct dvb_frontend *drxk_attach(const struct drxk_config *config,
/* Load firmware and initialize DRX-K */ /* Load firmware and initialize DRX-K */
if (state->microcode_name) { 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->microcode_name,
state->i2c->dev.parent, state->i2c->dev.parent,
GFP_KERNEL, GFP_KERNEL,
state, load_firmware_cb); state, load_firmware_cb);
if (status < 0) { if (status < 0) {
printk(KERN_ERR printk(KERN_ERR
"drxk: failed to request a firmware\n"); "drxk: failed to request a firmware\n");
return NULL; return NULL;
}
} }
} else if (init_drxk(state) < 0) } else if (init_drxk(state) < 0)
goto error; goto error;