[PATCH] I2C block read

From: Alexander Atanasov
Date: Wed Jun 07 2006 - 13:33:29 EST


Hello,

When doing i2c block read the lenght is passed as the first byte of the buffer,
so we must copy it from user otherwise temp is uninitialized.

Signed-off-by: Alexander Atanasov <alex@xxxxxx>

--
have fun,
alex


--- drivers/i2c/i2c-dev.c.orig 2006-01-04 02:00:00.000000000 +0200
+++ drivers/i2c/i2c-dev.c 2006-06-07 19:46:08.000000000 +0300
@@ -337,6 +337,7 @@

if ((data_arg.size == I2C_SMBUS_PROC_CALL) ||
(data_arg.size == I2C_SMBUS_BLOCK_PROC_CALL) ||
+ (data_arg.size == I2C_SMBUS_BLOCK_DATA) ||
(data_arg.read_write == I2C_SMBUS_WRITE)) {
if (copy_from_user(&temp, data_arg.data, datasize))
return -EFAULT;
-
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