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| author | Zhangfei Gao <zgao6@marvell.com> | 2010-03-02 12:23:49 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-03-02 12:23:49 +0100 |
| commit | 0c43ea544c1086fbbed5a6c99ea58eb64674ea8f (patch) | |
| tree | 1d50d78c261cd011667c12134d93f2d6d2caa6e5 /drivers/i2c | |
| parent | eec74a257f0a695688ba44c0f6c1e92dc81459be (diff) | |
| download | linux-0c43ea544c1086fbbed5a6c99ea58eb64674ea8f.tar.bz2 | |
i2c: Document the message size limit
i2c_master_send & i2c_master_recv do not support more than 64 kb
transfer, since msg.len is u16.
Signed-off-by: Zhangfei Gao <zgao6@marvell.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 4131698008b9..3202a86f420e 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1183,7 +1183,7 @@ EXPORT_SYMBOL(i2c_transfer); * i2c_master_send - issue a single I2C message in master transmit mode * @client: Handle to slave device * @buf: Data that will be written to the slave - * @count: How many bytes to write + * @count: How many bytes to write, must be less than 64k since msg.len is u16 * * Returns negative errno, or else the number of bytes written. */ @@ -1210,7 +1210,7 @@ EXPORT_SYMBOL(i2c_master_send); * i2c_master_recv - issue a single I2C message in master receive mode * @client: Handle to slave device * @buf: Where to store data read from slave - * @count: How many bytes to read + * @count: How many bytes to read, must be less than 64k since msg.len is u16 * * Returns negative errno, or else the number of bytes read. */ |