From b41a536cf9806c3478b2fa68d59edafd0787e8aa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Cardona?= Date: Fri, 28 Sep 2012 08:59:27 -0300 Subject: [media] ds3000: remove useless 'locking' MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since b9bf2eafaad9c1ef02fb3db38c74568be601a43a, the function ds3000_firmware_ondemand() is called only once during init. This locking scheme may have been useful when the firmware was loaded at each tune. Furthermore, it looks like this 'lock' was put in to prevent concurrent access (and not recursion as the comments suggest). However, this open- coded mechanism is anything but race-free and should have used a proper mutex. Signed-off-by: Rémi Cardona Reviewed-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/ds3000.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers') diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c index c84cd98a915..60a529e3833 100644 --- a/drivers/media/dvb-frontends/ds3000.c +++ b/drivers/media/dvb-frontends/ds3000.c @@ -30,7 +30,6 @@ #include "ds3000.h" static int debug; -static int force_fw_upload; #define dprintk(args...) \ do { \ @@ -234,7 +233,6 @@ struct ds3000_state { struct i2c_adapter *i2c; const struct ds3000_config *config; struct dvb_frontend frontend; - u8 skip_fw_load; /* previous uncorrected block counter for DVB-S2 */ u16 prevUCBS2; }; @@ -397,9 +395,6 @@ static int ds3000_firmware_ondemand(struct dvb_frontend *fe) if (ret < 0) return ret; - if (state->skip_fw_load || !force_fw_upload) - return 0; /* Firmware already uploaded, skipping */ - /* Load firmware */ /* request the firmware, this will block until someone uploads it */ printk(KERN_INFO "%s: Waiting for firmware upload (%s)...\n", __func__, @@ -413,9 +408,6 @@ static int ds3000_firmware_ondemand(struct dvb_frontend *fe) return ret; } - /* Make sure we don't recurse back through here during loading */ - state->skip_fw_load = 1; - ret = ds3000_load_firmware(fe, fw); if (ret) printk("%s: Writing firmware to device failed\n", __func__); @@ -425,9 +417,6 @@ static int ds3000_firmware_ondemand(struct dvb_frontend *fe) dprintk("%s: Firmware upload %s\n", __func__, ret == 0 ? "complete" : "failed"); - /* Ensure firmware is always loaded if required */ - state->skip_fw_load = 0; - return ret; } @@ -1309,9 +1298,6 @@ static struct dvb_frontend_ops ds3000_ops = { module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); -module_param(force_fw_upload, int, 0644); -MODULE_PARM_DESC(force_fw_upload, "Force firmware upload (default:0)"); - MODULE_DESCRIPTION("DVB Frontend module for Montage Technology " "DS3000/TS2020 hardware"); MODULE_AUTHOR("Konstantin Dimitrov"); -- cgit v1.2.3