From 4b902fec7cd838d2376517455acb03a83898e262 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Thu, 10 May 2012 05:40:50 -0300 Subject: [PATCH] [media] v4l2-ioctl: handle priority handling based on a table lookup Rather than checking the priority for each ioctl that needs to, just mark such ioctls in the table and do it only once. Signed-off-by: Hans Verkuil Acked-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-ioctl.c | 182 +++++++++------------------------------ 1 file changed, 41 insertions(+), 141 deletions(-) diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c index 3df1f80..623d280 100644 --- a/drivers/media/video/v4l2-ioctl.c +++ b/drivers/media/video/v4l2-ioctl.c @@ -189,6 +189,8 @@ struct v4l2_ioctl_info { const char * const name; }; +/* This control needs a priority check */ +#define INFO_FL_PRIO (1 << 0) /* This control can be valid if the filehandle passes a control handler. */ #define INFO_FL_CTRL (1 << 1) @@ -202,80 +204,82 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = { IOCTL_INFO(VIDIOC_QUERYCAP, 0), IOCTL_INFO(VIDIOC_ENUM_FMT, 0), IOCTL_INFO(VIDIOC_G_FMT, 0), - IOCTL_INFO(VIDIOC_S_FMT, 0), - IOCTL_INFO(VIDIOC_REQBUFS, 0), + IOCTL_INFO(VIDIOC_S_FMT, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_REQBUFS, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QUERYBUF, 0), IOCTL_INFO(VIDIOC_G_FBUF, 0), - IOCTL_INFO(VIDIOC_S_FBUF, 0), - IOCTL_INFO(VIDIOC_OVERLAY, 0), + IOCTL_INFO(VIDIOC_S_FBUF, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_OVERLAY, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QBUF, 0), IOCTL_INFO(VIDIOC_DQBUF, 0), - IOCTL_INFO(VIDIOC_STREAMON, 0), - IOCTL_INFO(VIDIOC_STREAMOFF, 0), + IOCTL_INFO(VIDIOC_STREAMON, INFO_FL_PRIO), + IOCTL_INFO(VIDIOC_STREAMOFF, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_PARM, 0), - IOCTL_INFO(VIDIOC_S_PARM, 0), + IOCTL_INFO(VIDIOC_S_PARM, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_STD, 0), - IOCTL_INFO(VIDIOC_S_STD, 0), + IOCTL_INFO(VIDIOC_S_STD, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_ENUMSTD, 0), IOCTL_INFO(VIDIOC_ENUMINPUT, 0), IOCTL_INFO(VIDIOC_G_CTRL, INFO_FL_CTRL), - IOCTL_INFO(VIDIOC_S_CTRL, INFO_FL_CTRL), + IOCTL_INFO(VIDIOC_S_CTRL, INFO_FL_PRIO | INFO_FL_CTRL), IOCTL_INFO(VIDIOC_G_TUNER, 0), - IOCTL_INFO(VIDIOC_S_TUNER, 0), + IOCTL_INFO(VIDIOC_S_TUNER, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_AUDIO, 0), - IOCTL_INFO(VIDIOC_S_AUDIO, 0), + IOCTL_INFO(VIDIOC_S_AUDIO, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QUERYCTRL, INFO_FL_CTRL), IOCTL_INFO(VIDIOC_QUERYMENU, INFO_FL_CTRL), IOCTL_INFO(VIDIOC_G_INPUT, 0), - IOCTL_INFO(VIDIOC_S_INPUT, 0), + IOCTL_INFO(VIDIOC_S_INPUT, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_OUTPUT, 0), - IOCTL_INFO(VIDIOC_S_OUTPUT, 0), + IOCTL_INFO(VIDIOC_S_OUTPUT, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_ENUMOUTPUT, 0), IOCTL_INFO(VIDIOC_G_AUDOUT, 0), - IOCTL_INFO(VIDIOC_S_AUDOUT, 0), + IOCTL_INFO(VIDIOC_S_AUDOUT, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_MODULATOR, 0), - IOCTL_INFO(VIDIOC_S_MODULATOR, 0), + IOCTL_INFO(VIDIOC_S_MODULATOR, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_FREQUENCY, 0), - IOCTL_INFO(VIDIOC_S_FREQUENCY, 0), + IOCTL_INFO(VIDIOC_S_FREQUENCY, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_CROPCAP, 0), IOCTL_INFO(VIDIOC_G_CROP, 0), - IOCTL_INFO(VIDIOC_S_CROP, 0), + IOCTL_INFO(VIDIOC_S_CROP, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_SELECTION, 0), - IOCTL_INFO(VIDIOC_S_SELECTION, 0), + IOCTL_INFO(VIDIOC_S_SELECTION, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_JPEGCOMP, 0), - IOCTL_INFO(VIDIOC_S_JPEGCOMP, 0), + IOCTL_INFO(VIDIOC_S_JPEGCOMP, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_QUERYSTD, 0), IOCTL_INFO(VIDIOC_TRY_FMT, 0), IOCTL_INFO(VIDIOC_ENUMAUDIO, 0), IOCTL_INFO(VIDIOC_ENUMAUDOUT, 0), IOCTL_INFO(VIDIOC_G_PRIORITY, 0), - IOCTL_INFO(VIDIOC_S_PRIORITY, 0), + IOCTL_INFO(VIDIOC_S_PRIORITY, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, 0), IOCTL_INFO(VIDIOC_LOG_STATUS, 0), IOCTL_INFO(VIDIOC_G_EXT_CTRLS, INFO_FL_CTRL), - IOCTL_INFO(VIDIOC_S_EXT_CTRLS, INFO_FL_CTRL), + IOCTL_INFO(VIDIOC_S_EXT_CTRLS, INFO_FL_PRIO | INFO_FL_CTRL), IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, 0), IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, 0), IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, 0), IOCTL_INFO(VIDIOC_G_ENC_INDEX, 0), - IOCTL_INFO(VIDIOC_ENCODER_CMD, 0), + IOCTL_INFO(VIDIOC_ENCODER_CMD, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, 0), - IOCTL_INFO(VIDIOC_DECODER_CMD, 0), + IOCTL_INFO(VIDIOC_DECODER_CMD, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, 0), +#ifdef CONFIG_VIDEO_ADV_DEBUG IOCTL_INFO(VIDIOC_DBG_S_REGISTER, 0), IOCTL_INFO(VIDIOC_DBG_G_REGISTER, 0), +#endif IOCTL_INFO(VIDIOC_DBG_G_CHIP_IDENT, 0), - IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, 0), + IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_ENUM_DV_PRESETS, 0), - IOCTL_INFO(VIDIOC_S_DV_PRESET, 0), + IOCTL_INFO(VIDIOC_S_DV_PRESET, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_DV_PRESET, 0), IOCTL_INFO(VIDIOC_QUERY_DV_PRESET, 0), - IOCTL_INFO(VIDIOC_S_DV_TIMINGS, 0), + IOCTL_INFO(VIDIOC_S_DV_TIMINGS, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_G_DV_TIMINGS, 0), IOCTL_INFO(VIDIOC_DQEVENT, 0), IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, 0), IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, 0), - IOCTL_INFO(VIDIOC_CREATE_BUFS, 0), + IOCTL_INFO(VIDIOC_CREATE_BUFS, INFO_FL_PRIO), IOCTL_INFO(VIDIOC_PREPARE_BUF, 0), }; #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) @@ -509,7 +513,6 @@ static long __video_do_ioctl(struct file *file, void *fh = file->private_data; struct v4l2_fh *vfh = NULL; int use_fh_prio = 0; - long ret_prio = 0; long ret = -ENOTTY; if (ops == NULL) { @@ -521,8 +524,6 @@ static long __video_do_ioctl(struct file *file, if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) { vfh = file->private_data; use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); - if (use_fh_prio) - ret_prio = v4l2_prio_check(vfd->prio, vfh->prio); } if (v4l2_is_known_ioctl(cmd)) { @@ -531,6 +532,12 @@ static long __video_do_ioctl(struct file *file, if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) && !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler)) return -ENOTTY; + + if (use_fh_prio && (info->flags & INFO_FL_PRIO)) { + ret = v4l2_prio_check(vfd->prio, vfh->prio); + if (ret) + return ret; + } } if ((vfd->debug & V4L2_DEBUG_IOCTL) && @@ -579,14 +586,11 @@ static long __video_do_ioctl(struct file *file, { enum v4l2_priority *p = arg; - if (!ops->vidioc_s_priority && !use_fh_prio) - break; dbgarg(cmd, "setting priority to %d\n", *p); if (ops->vidioc_s_priority) ret = ops->vidioc_s_priority(file, fh, *p); else - ret = ret_prio ? ret_prio : - v4l2_prio_change(&vfd->v4l2_dev->prio, + ret = v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p); break; } @@ -715,10 +719,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_format *f = (struct v4l2_format *)arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = -EINVAL; /* FIXME: Should be one dump per type */ @@ -885,10 +885,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_requestbuffers *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = check_fmt(ops, p->type); if (ret) break; @@ -946,10 +942,6 @@ static long __video_do_ioctl(struct file *file, { int *i = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "value=%d\n", *i); ret = ops->vidioc_overlay(file, fh, *i); break; @@ -971,10 +963,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_framebuffer *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", p->capability, p->flags, (unsigned long)p->base); v4l_print_pix_fmt(vfd, &p->fmt); @@ -985,10 +973,6 @@ static long __video_do_ioctl(struct file *file, { enum v4l2_buf_type i = *(int *)arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); ret = ops->vidioc_streamon(file, fh, i); break; @@ -997,10 +981,6 @@ static long __video_do_ioctl(struct file *file, { enum v4l2_buf_type i = *(int *)arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); ret = ops->vidioc_streamoff(file, fh, i); break; @@ -1070,10 +1050,6 @@ static long __video_do_ioctl(struct file *file, dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id); - if (ret_prio) { - ret = ret_prio; - break; - } ret = -EINVAL; norm = (*id) & vfd->tvnorms; if (vfd->tvnorms && !norm) /* Check if std is supported */ @@ -1148,10 +1124,6 @@ static long __video_do_ioctl(struct file *file, { unsigned int *i = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "value=%d\n", *i); ret = ops->vidioc_s_input(file, fh, *i); break; @@ -1197,10 +1169,6 @@ static long __video_do_ioctl(struct file *file, { unsigned int *i = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "value=%d\n", *i); ret = ops->vidioc_s_output(file, fh, *i); break; @@ -1270,10 +1238,6 @@ static long __video_do_ioctl(struct file *file, if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler && !ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls) break; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); @@ -1329,10 +1293,6 @@ static long __video_do_ioctl(struct file *file, if (!(vfh && vfh->ctrl_handler) && !vfd->ctrl_handler && !ops->vidioc_s_ext_ctrls) break; - if (ret_prio) { - ret = ret_prio; - break; - } v4l_print_ext_ctrls(cmd, vfd, p, 1); if (vfh && vfh->ctrl_handler) ret = v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p); @@ -1414,10 +1374,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_audio *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " "mode=0x%x\n", p->index, p->name, p->capability, p->mode); @@ -1451,10 +1407,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_audioout *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "index=%d, name=%s, capability=%d, " "mode=%d\n", p->index, p->name, p->capability, p->mode); @@ -1480,10 +1432,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_modulator *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "index=%d, name=%s, capability=%d, " "rangelow=%d, rangehigh=%d, txsubchans=%d\n", p->index, p->name, p->capability, p->rangelow, @@ -1526,10 +1474,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_crop *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); dbgrect(vfd, "", &p->c); @@ -1567,10 +1511,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_selection *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); dbgrect(vfd, "", &p->r); @@ -1639,10 +1579,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_jpegcompression *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, " "COM_len=%d, jpeg_markers=%d\n", p->quality, p->APPn, p->APP_len, @@ -1664,10 +1600,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_encoder_cmd *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = ops->vidioc_encoder_cmd(file, fh, p); if (!ret) dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); @@ -1686,10 +1618,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_decoder_cmd *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = ops->vidioc_decoder_cmd(file, fh, p); if (!ret) dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); @@ -1735,10 +1663,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_streamparm *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = check_fmt(ops, p->type); if (ret) break; @@ -1769,10 +1693,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_tuner *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; dbgarg(cmd, "index=%d, name=%s, type=%d, " @@ -1803,10 +1723,6 @@ static long __video_do_ioctl(struct file *file, struct v4l2_frequency *p = arg; enum v4l2_tuner_type type; - if (ret_prio) { - ret = ret_prio; - break; - } type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", @@ -1881,10 +1797,6 @@ static long __video_do_ioctl(struct file *file, struct v4l2_hw_freq_seek *p = arg; enum v4l2_tuner_type type; - if (ret_prio) { - ret = ret_prio; - break; - } type = (vfd->vfl_type == VFL_TYPE_RADIO) ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; dbgarg(cmd, @@ -1978,11 +1890,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_dv_preset *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } - dbgarg(cmd, "preset=%d\n", p->preset); ret = ops->vidioc_s_dv_preset(file, fh, p); break; @@ -2009,11 +1916,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_dv_timings *p = arg; - if (ret_prio) { - ret = ret_prio; - break; - } - switch (p->type) { case V4L2_DV_BT_656_1120: dbgarg2("bt-656/1120:interlaced=%d, pixelclock=%lld," @@ -2112,10 +2014,6 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_create_buffers *create = arg; - if (ret_prio) { - ret = ret_prio; - break; - } ret = check_fmt(ops, create->format.type); if (ret) break; @@ -2141,7 +2039,9 @@ static long __video_do_ioctl(struct file *file, default: if (!ops->vidioc_default) break; - ret = ops->vidioc_default(file, fh, ret_prio >= 0, cmd, arg); + ret = ops->vidioc_default(file, fh, use_fh_prio ? + v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0, + cmd, arg); break; } /* switch */ -- 2.7.4