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i2c: smbus: remove outdated references to irq level triggers

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IRQ levels are now handled within the IRQ core. Remove the forgotten
references from the documentation.

Fixes: 9b9f2b8bc2 ("i2c: i2c-smbus: Use threaded irq for smbalert")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2020-02-28 18:12:21 +01:00 committed by Wolfram Sang
parent ed68052226
commit a47070aac9
2 changed files with 0 additions and 10 deletions
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5
drivers/i2c/i2c-core-smbus.c
View file

@ -676,11 +676,6 @@ EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data_or_emulated);
* Handling can be done either through our IRQ handler, or by the
* adapter (from its handler, periodic polling, or whatever).
*
* NOTE that if we manage the IRQ, we *MUST* know if it's level or
* edge triggered in order to hand it to the workqueue correctly.
* If triggering the alert seems to wedge the system, you probably
* should have said it's level triggered.
*
* This returns the ara client, which should be saved for later use with
* i2c_handle_smbus_alert() and ultimately i2c_unregister_device(); or an
* ERRPTR to indicate an error.

5
include/linux/i2c-smbus.h
View file

@ -15,17 +15,12 @@
/**
* i2c_smbus_alert_setup - platform data for the smbus_alert i2c client
* @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0)
* triggered
* @irq: IRQ number, if the smbus_alert driver should take care of interrupt
* handling
*
* If irq is not specified, the smbus_alert driver doesn't take care of
* interrupt handling. In that case it is up to the I2C bus driver to either
* handle the interrupts or to poll for alerts.
*
* If irq is specified then it it crucial that alert_edge_triggered is
* properly set.
*/
struct i2c_smbus_alert_setup {
int irq;