From: "Stephen Biggs" <yrgrknmxpzlk@gawab.com>
To: kernel-janitors@vger.kernel.org
Subject: [KJ] [PATCH][RESUBMIT][5/21] drivers/isdn/hisax/* - compile warning
Date: Mon, 14 Feb 2005 22:02:52 +0000 [thread overview]
Message-ID: <42113C2C.16731.52BBCF@localhost> (raw)
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Description: compile warning cleanup - handle copy_to/from_user error
returns
Signed-off-by: Stephen Biggs <yrgrknmxpzlk@gawab.com>
diff -Nurdp -X dontdiff-osdl linux-2.6.11-rc3-mm2-original/drivers/isdn/hisax/config.c linux-2.6.11-rc3-mm2/drivers/isdn/hisax/config.c
--- linux-2.6.11-rc3-mm2-original/drivers/isdn/hisax/config.c 2005-02-12 12:06:24.000000000 +0200
+++ linux-2.6.11-rc3-mm2/drivers/isdn/hisax/config.c 2005-02-13 21:21:52.000000000 +0200
@@ -631,7 +631,12 @@ int HiSax_readstatus(u_char __user *buf,
count = cs->status_end - cs->status_read + 1;
if (count >= len)
count = len;
- copy_to_user(p, cs->status_read, count);
+ if (copy_to_user(p, cs->status_read, count)) {
+ printk(KERN_ERR
+ "HiSax:%s: copy_to_user failed!\n",
+ __FUNCTION__);
+ return -EFAULT;
+ }
cs->status_read += count;
if (cs->status_read > cs->status_end)
cs->status_read = cs->status_buf;
@@ -642,7 +647,12 @@ int HiSax_readstatus(u_char __user *buf,
cnt = HISAX_STATUS_BUFSIZE;
else
cnt = count;
- copy_to_user(p, cs->status_read, cnt);
+ if (copy_to_user(p, cs->status_read, cnt)) {
+ printk(KERN_ERR
+ "HiSax:%s: copy_to_user failed!\n",
+ __FUNCTION__);
+ return -EFAULT;
+ }
p += cnt;
cs->status_read += cnt % HISAX_STATUS_BUFSIZE;
count -= cnt;
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