Hi!
Some nits...
On 2017-12-06 14:01, Bartosz Golaszewski wrote:
> There are a couple symbols defined in the driver source file which are
> missing the at24_ prefix. This patch fixes that.
>
> For module params: use module_param_named() in order not to break the
> userspace.
I'd write that as "...in order to not break userspace"
>
> Signed-off-by: Bartosz Golaszewski <brgl@xxxxxxxx>
> ---
> drivers/misc/eeprom/at24.c | 34 ++++++++++++++++++----------------
> 1 file changed, 18 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
> index 2426f2c111c7..dd0903c7df39 100644
> --- a/drivers/misc/eeprom/at24.c
> +++ b/drivers/misc/eeprom/at24.c
> @@ -93,17 +93,17 @@ struct at24_data {
> *
> * This value is forced to be a power of two so that writes align on pages.
> */
> -static unsigned int io_limit = 128;
> -module_param(io_limit, uint, 0000);
> -MODULE_PARM_DESC(io_limit, "Maximum bytes per I/O (default 128)");
> +static unsigned int at24_io_limit = 128;
> +module_param_named(io_limit, at24_io_limit, uint, 0000);
> +MODULE_PARM_DESC(at24_io_limit, "Maximum bytes per I/O (default 128)");
>
> /*
> * Specs often allow 5 msec for a page write, sometimes 20 msec;
> * it's important to recover from write timeouts.
> */
> -static unsigned int write_timeout = 25;
> -module_param(write_timeout, uint, 0000);
> -MODULE_PARM_DESC(write_timeout, "Time (in ms) to try writes (default 25)");
> +static unsigned int at24_write_timeout = 25;
> +module_param_named(write_timeout, at24_write_timeout, uint, 0000);
> +MODULE_PARM_DESC(at24_write_timeout, "Time (in ms) to try writes (default 25)");
>
> #define AT24_SIZE_BYTELEN 5
> #define AT24_SIZE_FLAGS 8
> @@ -126,8 +126,9 @@ MODULE_PARM_DESC(write_timeout, "Time (in ms) to try writes (default 25)");
> * iteration of processing the request. Both should be unsigned integers
> * holding at least 32 bits.
> */
> -#define loop_until_timeout(tout, op_time) \
> - for (tout = jiffies + msecs_to_jiffies(write_timeout), op_time = 0; \
> +#define at24_tool_until_timeout(tout, op_time) \
s/tool/loop/
.oO(hmm, is that a figure skating jump? naaah, guess not...)
Cheers,
peda
> + for (tout = jiffies + msecs_to_jiffies(at24_write_timeout), \
> + op_time = 0; \
> op_time ? time_before(op_time, tout) : true; \
> usleep_range(1000, 1500), op_time = jiffies)
>
> @@ -290,13 +291,13 @@ static ssize_t at24_regmap_read(struct at24_data *at24, char *buf,
> regmap = at24_client->regmap;
> client = at24_client->client;
>
> - if (count > io_limit)
> - count = io_limit;
> + if (count > at24_io_limit)
> + count = at24_io_limit;
>
> /* adjust offset for mac and serial read ops */
> offset += at24->offset_adj;
>
> - loop_until_timeout(timeout, read_time) {
> + at24_tool_until_timeout(timeout, read_time) {
> ret = regmap_bulk_read(regmap, offset, buf, count);
> dev_dbg(&client->dev, "read %zu@%d --> %d (%ld)\n",
> count, offset, ret, jiffies);
> @@ -347,7 +348,7 @@ static ssize_t at24_regmap_write(struct at24_data *at24, const char *buf,
> client = at24_client->client;
> count = at24_adjust_write_count(at24, offset, count);
>
> - loop_until_timeout(timeout, write_time) {
> + at24_tool_until_timeout(timeout, write_time) {
> ret = regmap_bulk_write(regmap, offset, buf, count);
> dev_dbg(&client->dev, "write %zu@%d --> %d (%ld)\n",
> count, offset, ret, jiffies);
> @@ -613,7 +614,8 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
>
> writable = !(chip.flags & AT24_FLAG_READONLY);
> if (writable) {
> - at24->write_max = min_t(unsigned int, chip.page_size, io_limit);
> + at24->write_max = min_t(unsigned int,
> + chip.page_size, at24_io_limit);
> if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C) &&
> at24->write_max > I2C_SMBUS_BLOCK_MAX)
> at24->write_max = I2C_SMBUS_BLOCK_MAX;
> @@ -728,12 +730,12 @@ static struct i2c_driver at24_driver = {
>
> static int __init at24_init(void)
> {
> - if (!io_limit) {
> - pr_err("at24: io_limit must not be 0!\n");
> + if (!at24_io_limit) {
> + pr_err("at24: at24_io_limit must not be 0!\n");
> return -EINVAL;
> }
>
> - io_limit = rounddown_pow_of_two(io_limit);
> + at24_io_limit = rounddown_pow_of_two(at24_io_limit);
> return i2c_add_driver(&at24_driver);
> }
> module_init(at24_init);
>
