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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/i2c/i2c-dev.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/i2c/i2c-dev.c')
-rw-r--r--kernel/drivers/i2c/i2c-dev.c23
1 files changed, 10 insertions, 13 deletions
diff --git a/kernel/drivers/i2c/i2c-dev.c b/kernel/drivers/i2c/i2c-dev.c
index 71c7a3975..2413ec9f8 100644
--- a/kernel/drivers/i2c/i2c-dev.c
+++ b/kernel/drivers/i2c/i2c-dev.c
@@ -235,7 +235,7 @@ static int i2cdev_check_addr(struct i2c_adapter *adapter, unsigned int addr)
return result;
}
-static noinline int i2cdev_ioctl_rdrw(struct i2c_client *client,
+static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client,
unsigned long arg)
{
struct i2c_rdwr_ioctl_data rdwr_arg;
@@ -250,7 +250,7 @@ static noinline int i2cdev_ioctl_rdrw(struct i2c_client *client,
/* Put an arbitrary limit on the number of messages that can
* be sent at once */
- if (rdwr_arg.nmsgs > I2C_RDRW_IOCTL_MAX_MSGS)
+ if (rdwr_arg.nmsgs > I2C_RDWR_IOCTL_MAX_MSGS)
return -EINVAL;
rdwr_pa = memdup_user(rdwr_arg.msgs,
@@ -421,16 +421,6 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
switch (cmd) {
case I2C_SLAVE:
case I2C_SLAVE_FORCE:
- /* NOTE: devices set up to work with "new style" drivers
- * can't use I2C_SLAVE, even when the device node is not
- * bound to a driver. Only I2C_SLAVE_FORCE will work.
- *
- * Setting the PEC flag here won't affect kernel drivers,
- * which will be using the i2c_client node registered with
- * the driver model core. Likewise, when that client has
- * the PEC flag already set, the i2c-dev driver won't see
- * (or use) this setting.
- */
if ((arg > 0x3ff) ||
(((client->flags & I2C_M_TEN) == 0) && arg > 0x7f))
return -EINVAL;
@@ -446,6 +436,13 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
client->flags &= ~I2C_M_TEN;
return 0;
case I2C_PEC:
+ /*
+ * Setting the PEC flag here won't affect kernel drivers,
+ * which will be using the i2c_client node registered with
+ * the driver model core. Likewise, when that client has
+ * the PEC flag already set, the i2c-dev driver won't see
+ * (or use) this setting.
+ */
if (arg)
client->flags |= I2C_CLIENT_PEC;
else
@@ -456,7 +453,7 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return put_user(funcs, (unsigned long __user *)arg);
case I2C_RDWR:
- return i2cdev_ioctl_rdrw(client, arg);
+ return i2cdev_ioctl_rdwr(client, arg);
case I2C_SMBUS:
return i2cdev_ioctl_smbus(client, arg);