From b4be2048ce62d05d93608f82d5e986612ed4fdf7 Mon Sep 17 00:00:00 2001 From: Alexey Klimov <klimov.linux@gmail.com> Date: Thu, 9 Oct 2008 13:46:59 -0300 Subject: V4L/DVB (9152): radio-zoltrix: Add checking for frequency This patch adds printk messages, adds checking if frequency is set, adds return -EINVAL in right places in zoltrix-radio. Signed-off-by: Alexey Klimov <klimov.linux@gmail.com> Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> --- drivers/media/radio/radio-zoltrix.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'drivers/media/radio') diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c index f75da63b1634..15b10bad6796 100644 --- a/drivers/media/radio/radio-zoltrix.c +++ b/drivers/media/radio/radio-zoltrix.c @@ -123,8 +123,11 @@ static int zol_setfreq(struct zol_device *dev, unsigned long freq) unsigned int stereo = dev->stereo; int i; - if (freq == 0) - return 1; + if (freq == 0) { + printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n"); + return -EINVAL; + } + m = (freq / 160 - 8800) * 2; f = (unsigned long long) m + 0x4d1c; @@ -279,7 +282,10 @@ static int vidioc_s_frequency(struct file *file, void *priv, struct zol_device *zol = video_drvdata(file); zol->curfreq = f->frequency; - zol_setfreq(zol, zol->curfreq); + if (zol_setfreq(zol, zol->curfreq) != 0) { + printk(KERN_WARNING "zoltrix: Set frequency failed.\n"); + return -EINVAL; + } return 0; } @@ -343,7 +349,10 @@ static int vidioc_s_ctrl(struct file *file, void *priv, return 0; } zol->stereo = 1; - zol_setfreq(zol, zol->curfreq); + if (zol_setfreq(zol, zol->curfreq) != 0) { + printk(KERN_WARNING "zoltrix: Set frequency failed.\n"); + return -EINVAL; + } #if 0 /* FIXME: Implement stereo/mono switch on V4L2 */ if (v->mode & VIDEO_SOUND_STEREO) { -- cgit v1.2.3