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Commit 52ea1619 authored by Eric Sesterhenn / snakebyte's avatar Eric Sesterhenn / snakebyte Committed by Greg Kroah-Hartman
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[PATCH] USB: Remove LINUX_VERSION_CODE check in pwc/pwc-ctrl.c 



this patch removes compatibility with 2.4 kernel, which makes
the code much easier to read.

Signed-off-by: default avatarEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 97906369

drivers/usb/media/pwc/pwc-ctrl.c

+89 −175
Original line number Diff line number Diff line
@@ -1152,45 +1152,6 @@ int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor) 
 /* End of Add-Ons                                    */

 /* ************************************************* */



/* Linux 2.5.something and 2.6 pass direct pointers to arguments of

   ioctl() calls. With 2.4, you have to do tedious copy_from_user()

   and copy_to_user() calls. With these macros we circumvent this,

   and let me maintain only one source file. The functionality is

   exactly the same otherwise.

 */   



#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)



/* define local variable for arg */

#define ARG_DEF(ARG_type, ARG_name)\

	ARG_type *ARG_name = arg;

/* copy arg to local variable */	

#define ARG_IN(ARG_name) /* nothing */

/* argument itself (referenced) */

#define ARGR(ARG_name) (*ARG_name)

/* argument address */

#define ARGA(ARG_name) ARG_name

/* copy local variable to arg */

#define ARG_OUT(ARG_name) /* nothing */



#else



#define ARG_DEF(ARG_type, ARG_name)\

	ARG_type ARG_name;

#define ARG_IN(ARG_name)\

	if (copy_from_user(&ARG_name, arg, sizeof(ARG_name))) {\

		ret = -EFAULT;\

		break;\

	}

#define ARGR(ARG_name) ARG_name

#define ARGA(ARG_name) &ARG_name

#define ARG_OUT(ARG_name)\

	if (copy_to_user(arg, &ARG_name, sizeof(ARG_name))) {\

		ret = -EFAULT;\

		break;\

	}



#endif



int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)

{
@@ -1220,243 +1181,206 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
	

	case VIDIOCPWCSCQUAL:

	{	

		ARG_DEF(int, qual)

		int *qual = arg;



		ARG_IN(qual)

		if (ARGR(qual) < 0 || ARGR(qual) > 3)

		if (*qual < 0 || *qual > 3)

			ret = -EINVAL;

		else

			ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, ARGR(qual), pdev->vsnapshot);

			ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, *qual, pdev->vsnapshot);

		if (ret >= 0)

			pdev->vcompression = ARGR(qual);

			pdev->vcompression = *qual;

		break;

	}

	

	case VIDIOCPWCGCQUAL:

	{

		ARG_DEF(int, qual)

		

		ARGR(qual) = pdev->vcompression;

		ARG_OUT(qual)

		int *qual = arg;

		*qual = pdev->vcompression;

		break;

	}

	

	case VIDIOCPWCPROBE:

	{

		ARG_DEF(struct pwc_probe, probe)

		

		strcpy(ARGR(probe).name, pdev->vdev->name);

		ARGR(probe).type = pdev->type;

		ARG_OUT(probe)

		struct pwc_probe *probe = arg;

		strcpy(probe->name, pdev->vdev->name);

		probe->type = pdev->type;

		break;

	}



	case VIDIOCPWCGSERIAL:

	{

		ARG_DEF(struct pwc_serial, serial)

		

		strcpy(ARGR(serial).serial, pdev->serial);

		ARG_OUT(serial)

		struct pwc_serial *serial = arg;

		strcpy(serial->serial, pdev->serial);

		break;

	}



	case VIDIOCPWCSAGC:

	{

		ARG_DEF(int, agc)



		ARG_IN(agc)

		if (pwc_set_agc(pdev, ARGR(agc) < 0 ? 1 : 0, ARGR(agc)))

		int *agc = arg;

		if (pwc_set_agc(pdev, *agc < 0 ? 1 : 0, *agc))

			ret = -EINVAL;

		break;

	}

	

	case VIDIOCPWCGAGC:

	{

		ARG_DEF(int, agc)

		int *agc = arg;

		

		if (pwc_get_agc(pdev, ARGA(agc)))

		if (pwc_get_agc(pdev, agc))

			ret = -EINVAL;

		ARG_OUT(agc)

		break;

	}

	

	case VIDIOCPWCSSHUTTER:

	{

		ARG_DEF(int, shutter_speed)



		ARG_IN(shutter_speed)

		ret = pwc_set_shutter_speed(pdev, ARGR(shutter_speed) < 0 ? 1 : 0, ARGR(shutter_speed));

		int *shutter_speed = arg;

		ret = pwc_set_shutter_speed(pdev, *shutter_speed < 0 ? 1 : 0, *shutter_speed);

		break;

	}

	

        case VIDIOCPWCSAWB:

	{

		ARG_DEF(struct pwc_whitebalance, wb)

		struct pwc_whitebalance *wb = arg;

		

		ARG_IN(wb)

		ret = pwc_set_awb(pdev, ARGR(wb).mode);

		if (ret >= 0 && ARGR(wb).mode == PWC_WB_MANUAL) {

			pwc_set_red_gain(pdev, ARGR(wb).manual_red);

			pwc_set_blue_gain(pdev, ARGR(wb).manual_blue);

		ret = pwc_set_awb(pdev, wb->mode);

		if (ret >= 0 && wb->mode == PWC_WB_MANUAL) {

			pwc_set_red_gain(pdev, wb->manual_red);

			pwc_set_blue_gain(pdev, wb->manual_blue);

		}

		break;

	}



	case VIDIOCPWCGAWB:

	{

		ARG_DEF(struct pwc_whitebalance, wb)

		struct pwc_whitebalance *wb = arg;



		memset(ARGA(wb), 0, sizeof(struct pwc_whitebalance));

		ARGR(wb).mode = pwc_get_awb(pdev);

		if (ARGR(wb).mode < 0)

		memset(wb, 0, sizeof(struct pwc_whitebalance));

		wb->mode = pwc_get_awb(pdev);

		if (wb->mode < 0)

			ret = -EINVAL;

		else {

			if (ARGR(wb).mode == PWC_WB_MANUAL) {

				ret = pwc_get_red_gain(pdev, &ARGR(wb).manual_red);

			if (wb->mode == PWC_WB_MANUAL) {

				ret = pwc_get_red_gain(pdev, &wb->manual_red);

				if (ret < 0)

					break;

				ret = pwc_get_blue_gain(pdev, &ARGR(wb).manual_blue);

				ret = pwc_get_blue_gain(pdev, &wb->manual_blue);

				if (ret < 0)

					break;

			}

			if (ARGR(wb).mode == PWC_WB_AUTO) {

				ret = pwc_read_red_gain(pdev, &ARGR(wb).read_red);

			if (wb->mode == PWC_WB_AUTO) {

				ret = pwc_read_red_gain(pdev, &wb->read_red);

				if (ret < 0)

					break;

 				ret =pwc_read_blue_gain(pdev, &ARGR(wb).read_blue);

 				ret = pwc_read_blue_gain(pdev, &wb->read_blue);

 				if (ret < 0)

 					break;

			}

		}

		ARG_OUT(wb)

		break;

	}

	

	case VIDIOCPWCSAWBSPEED:

	{

		ARG_DEF(struct pwc_wb_speed, wbs)

		struct pwc_wb_speed *wbs = arg;

		

		if (ARGR(wbs).control_speed > 0) {

			ret = pwc_set_wb_speed(pdev, ARGR(wbs).control_speed);

		if (wbs->control_speed > 0) {

			ret = pwc_set_wb_speed(pdev, wbs->control_speed);

		}

		if (ARGR(wbs).control_delay > 0) {

			ret = pwc_set_wb_delay(pdev, ARGR(wbs).control_delay);

		if (wbs->control_delay > 0) {

			ret = pwc_set_wb_delay(pdev, wbs->control_delay);

		}

		break;

	}

	

	case VIDIOCPWCGAWBSPEED:

	{

		ARG_DEF(struct pwc_wb_speed, wbs)

		struct pwc_wb_speed *wbs = arg;

		

		ret = pwc_get_wb_speed(pdev, &ARGR(wbs).control_speed);

		ret = pwc_get_wb_speed(pdev, &wbs->control_speed);

		if (ret < 0)

			break;

		ret = pwc_get_wb_delay(pdev, &ARGR(wbs).control_delay);

		ret = pwc_get_wb_delay(pdev, &wbs->control_delay);

		if (ret < 0)

			break;

		ARG_OUT(wbs)

		break;

	}



        case VIDIOCPWCSLED:

	{

		ARG_DEF(struct pwc_leds, leds)



		ARG_IN(leds)

		ret = pwc_set_leds(pdev, ARGR(leds).led_on, ARGR(leds).led_off);

		struct pwc_leds *leds = arg;

		ret = pwc_set_leds(pdev, leds->led_on, leds->led_off);

	    	break;

	}





	case VIDIOCPWCGLED:

	{

		ARG_DEF(struct pwc_leds, leds)

		

		ret = pwc_get_leds(pdev, &ARGR(leds).led_on, &ARGR(leds).led_off);

		ARG_OUT(leds)

		struct pwc_leds *leds = arg;

		ret = pwc_get_leds(pdev, &leds->led_on, &leds->led_off);

		break;

	}



	case VIDIOCPWCSCONTOUR:

	{

		ARG_DEF(int, contour)



		ARG_IN(contour)

		ret = pwc_set_contour(pdev, ARGR(contour));

		int *contour = arg;

		ret = pwc_set_contour(pdev, *contour);

		break;

	}

			

	case VIDIOCPWCGCONTOUR:

	{

		ARG_DEF(int, contour)

		

		ret = pwc_get_contour(pdev, ARGA(contour));

		ARG_OUT(contour)

		int *contour = arg;

		ret = pwc_get_contour(pdev, contour);

		break;

	}

	

	case VIDIOCPWCSBACKLIGHT:

	{

		ARG_DEF(int, backlight)

		

		ARG_IN(backlight)

		ret = pwc_set_backlight(pdev, ARGR(backlight));

		int *backlight = arg;

		ret = pwc_set_backlight(pdev, *backlight);

		break;

	}



	case VIDIOCPWCGBACKLIGHT:

	{

		ARG_DEF(int, backlight)

		

		ret = pwc_get_backlight(pdev, ARGA(backlight));

		ARG_OUT(backlight)

		int *backlight = arg;

		ret = pwc_get_backlight(pdev, backlight);

		break;

	}

	

	case VIDIOCPWCSFLICKER:

	{

		ARG_DEF(int, flicker)

		

		ARG_IN(flicker)

		ret = pwc_set_flicker(pdev, ARGR(flicker));

		int *flicker = arg;

		ret = pwc_set_flicker(pdev, *flicker);

		break;

	}



	case VIDIOCPWCGFLICKER:

	{

		ARG_DEF(int, flicker)

		

		ret = pwc_get_flicker(pdev, ARGA(flicker));

		ARG_OUT(flicker)

		int *flicker = arg;

		ret = pwc_get_flicker(pdev, flicker);

		break;

	}

	

	case VIDIOCPWCSDYNNOISE:

	{

		ARG_DEF(int, dynnoise)

		

		ARG_IN(dynnoise)

		ret = pwc_set_dynamic_noise(pdev, ARGR(dynnoise));

		int *dynnoise = arg;

		ret = pwc_set_dynamic_noise(pdev, *dynnoise);

		break;

	}

	

	case VIDIOCPWCGDYNNOISE:

	{

		ARG_DEF(int, dynnoise)



		ret = pwc_get_dynamic_noise(pdev, ARGA(dynnoise));

		ARG_OUT(dynnoise);

		int *dynnoise = arg;

		ret = pwc_get_dynamic_noise(pdev, dynnoise);

		break;

	}



	case VIDIOCPWCGREALSIZE:

	{

		ARG_DEF(struct pwc_imagesize, size)

		

		ARGR(size).width = pdev->image.x;

		ARGR(size).height = pdev->image.y;

		ARG_OUT(size)

		struct pwc_imagesize *size = arg;

		size->width = pdev->image.x;

		size->height = pdev->image.y;

		break;

 	}
@@ -1464,10 +1388,9 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
 	{

 		if (pdev->features & FEATURE_MOTOR_PANTILT)

 		{

	 		ARG_DEF(int, flags)

	 		int *flags = arg;



 			ARG_IN(flags)

			ret = pwc_mpt_reset(pdev, ARGR(flags));

			ret = pwc_mpt_reset(pdev, *flags);

 			if (ret >= 0)

 			{

 				pdev->pan_angle = 0;
@@ -1485,10 +1408,8 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
 	{

 		if (pdev->features & FEATURE_MOTOR_PANTILT)

 		{

 			ARG_DEF(struct pwc_mpt_range, range)

 			

 			ARGR(range) = pdev->angle_range;

 			ARG_OUT(range)

 			struct pwc_mpt_range *range = arg;

 			*range = pdev->angle_range;

 		}

 		else

 		{
@@ -1503,21 +1424,19 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
 		

 		if (pdev->features & FEATURE_MOTOR_PANTILT)

 		{

	 		ARG_DEF(struct pwc_mpt_angles, angles)



	 		ARG_IN(angles)

	 		struct pwc_mpt_angles *angles = arg;

			/* The camera can only set relative angles, so

			   do some calculations when getting an absolute angle .

			 */

			if (ARGR(angles).absolute)

			if (angles->absolute)

			{

 				new_pan  = ARGR(angles).pan; 

 				new_tilt = ARGR(angles).tilt;

 				new_pan  = angles->pan;

 				new_tilt = angles->tilt;

 			}

 			else

 			{

 				new_pan  = pdev->pan_angle  + ARGR(angles).pan;

 				new_tilt = pdev->tilt_angle + ARGR(angles).tilt;

 				new_pan  = pdev->pan_angle  + angles->pan;

 				new_tilt = pdev->tilt_angle + angles->tilt;

			}

			/* check absolute ranges */

			if (new_pan  < pdev->angle_range.pan_min  ||
@@ -1560,12 +1479,11 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
 		

 		if (pdev->features & FEATURE_MOTOR_PANTILT)

 		{

	 		ARG_DEF(struct pwc_mpt_angles, angles)

	 		struct pwc_mpt_angles *angles = arg;



 			ARGR(angles).absolute = 1;

 			ARGR(angles).pan  = pdev->pan_angle;

 			ARGR(angles).tilt = pdev->tilt_angle;

 			ARG_OUT(angles)

 			angles->absolute = 1;

 			angles->pan  = pdev->pan_angle;

 			angles->tilt = pdev->tilt_angle;

 		}

 		else

 		{
@@ -1578,10 +1496,8 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 
 	{

 		if (pdev->features & FEATURE_MOTOR_PANTILT)

 		{

 			ARG_DEF(struct pwc_mpt_status, status)

 			

 			ret = pwc_mpt_get_status(pdev, ARGA(status));

 			ARG_OUT(status)

 			struct pwc_mpt_status *status = arg;

 			ret = pwc_mpt_get_status(pdev, status);

 		}

 		else

 		{
@@ -1592,24 +1508,22 @@ int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg) 


	case VIDIOCPWCGVIDCMD:

	{

		ARG_DEF(struct pwc_video_command, cmd);

		struct pwc_video_command *cmd = arg;

		

                ARGR(cmd).type = pdev->type;

		ARGR(cmd).release = pdev->release;

		ARGR(cmd).command_len = pdev->cmd_len;

		memcpy(&ARGR(cmd).command_buf, pdev->cmd_buf, pdev->cmd_len);

		ARGR(cmd).bandlength = pdev->vbandlength;

		ARGR(cmd).frame_size = pdev->frame_size;

		ARG_OUT(cmd)

                cmd->type = pdev->type;

		cmd->release = pdev->release;

		cmd->command_len = pdev->cmd_len;

		memcpy(&cmd->command_buf, pdev->cmd_buf, pdev->cmd_len);

		cmd->bandlength = pdev->vbandlength;

		cmd->frame_size = pdev->frame_size;

		break;

	}

       /*

	case VIDIOCPWCGVIDTABLE:

	{

		ARG_DEF(struct pwc_table_init_buffer, table);

		ARGR(table).len = pdev->cmd_len;

		memcpy(&ARGR(table).buffer, pdev->decompress_data, pdev->decompressor->table_size);

		ARG_OUT(table)

		struct pwc_table_init_buffer *table = arg;

		table->len = pdev->cmd_len;

		memcpy(&table->buffer, pdev->decompress_data, pdev->decompressor->table_size);

		break;

	}

	*/