From: Dan Carpenter <dan.carpenter@oracle.com>
To: kernel-janitors@vger.kernel.org
Subject: [patch 2/2] ALSA: hdspm - cleanup __user tags in ioctl()
Date: Fri, 23 Sep 2011 06:25:05 +0000 [thread overview]
Message-ID: <20110923062504.GJ4387@elgon.mountain> (raw)
This makes the code cleaner and silences a Sparse complaint:
sound/pci/rme9652/hdspm.c:6341:23: warning: incorrect type in assignment (incompatible argument 4 (different address spaces))
sound/pci/rme9652/hdspm.c:6341:23: expected int ( *ioctl )( ... )
sound/pci/rme9652/hdspm.c:6341:23: got int ( static [toplevel] *<noident> )( ... )
sound/pci/rme9652/hdspm.c:6102:44: warning: dereference of noderef expression
sound/pci/rme9652/hdspm.c:6225:50: warning: dereference of noderef expression
sound/pci/rme9652/hdspm.c:6264:50: warning: dereference of noderef expression
sound/pci/rme9652/hdspm.c:6283:50: warning: dereference of noderef expression
sound/pci/rme9652/hdspm.c:6289:59: warning: dereference of noderef expression
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index bf438d1..6e2f7ef 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -6097,7 +6097,7 @@ static inline int copy_u32_le(void __user *dest, void __iomem *src)
}
static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
- unsigned int cmd, unsigned long __user arg)
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct hdspm *hdspm = hw->private_data;
@@ -6222,7 +6222,7 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
info.line_out = hdspm_line_out(hdspm);
info.passthru = 0;
spin_unlock_irq(&hdspm->lock);
- if (copy_to_user((void __user *) arg, &info, sizeof(info)))
+ if (copy_to_user(argp, &info, sizeof(info)))
return -EFAULT;
break;
@@ -6261,7 +6261,7 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
break;
}
- if (copy_to_user((void __user *) arg, &status, sizeof(status)))
+ if (copy_to_user(argp, &status, sizeof(status)))
return -EFAULT;
@@ -6280,13 +6280,13 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file,
if (hdspm->tco)
hdspm_version.addons |= HDSPM_ADDON_TCO;
- if (copy_to_user((void __user *) arg, &hdspm_version,
+ if (copy_to_user(argp, &hdspm_version,
sizeof(hdspm_version)))
return -EFAULT;
break;
case SNDRV_HDSPM_IOCTL_GET_MIXER:
- if (copy_from_user(&mixer, (void __user *)arg, sizeof(mixer)))
+ if (copy_from_user(&mixer, argp, sizeof(mixer)))
return -EFAULT;
if (copy_to_user((void __user *)mixer.mixer, hdspm->mixer,
sizeof(struct hdspm_mixer)))
next reply other threads:[~2011-09-23 6:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-23 6:25 Dan Carpenter [this message]
2011-09-23 6:32 ` [patch 2/2] ALSA: hdspm - cleanup __user tags in ioctl() Takashi Iwai
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