Hi,
On Fri, Jan 22, 2021 at 10:17:34PM +0300, Dmitry Osipenko wrote:
> The IRQ=0 could be a valid interrupt number in kernel because interrupt
> numbers are virtual in a modern kernel. Hence fix the interrupt usage in
> a case if interrupt is unavailable by not overriding the interrupt number
> which is used by the driver.
>
> Note that currently Nexus 7 is the only know device which uses SMB347
> kernel diver and it has a properly working interrupt, hence this patch
> doesn't fix any real problems, it's a minor cleanup/improvement.
>
> Fixes: 99298de5df92 ("power: supply: smb347-charger: Replace mutex with IRQ
> disable/enable")
> Signed-off-by: Dmitry Osipenko <[email protected]>
> ---
Thanks, queued.
-- Sebastian
> drivers/power/supply/smb347-charger.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/power/supply/smb347-charger.c
> b/drivers/power/supply/smb347-charger.c
> index d3bf35ed12ce..8cfbd8d6b478 100644
> --- a/drivers/power/supply/smb347-charger.c
> +++ b/drivers/power/supply/smb347-charger.c
> @@ -137,6 +137,7 @@
> * @mains_online: is AC/DC input connected
> * @usb_online: is USB input connected
> * @charging_enabled: is charging enabled
> + * @irq_unsupported: is interrupt unsupported by SMB hardware
> * @max_charge_current: maximum current (in uA) the battery can be charged
> * @max_charge_voltage: maximum voltage (in uV) the battery can be charged
> * @pre_charge_current: current (in uA) to use in pre-charging phase
> @@ -193,6 +194,7 @@ struct smb347_charger {
> bool mains_online;
> bool usb_online;
> bool charging_enabled;
> + bool irq_unsupported;
>
> unsigned int max_charge_current;
> unsigned int max_charge_voltage;
> @@ -862,6 +864,9 @@ static int smb347_irq_set(struct smb347_charger *smb,
> bool enable)
> {
> int ret;
>
> + if (smb->irq_unsupported)
> + return 0;
> +
> ret = smb347_set_writable(smb, true);
> if (ret < 0)
> return ret;
> @@ -923,8 +928,6 @@ static int smb347_irq_init(struct smb347_charger *smb,
> ret = regmap_update_bits(smb->regmap, CFG_STAT,
> CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
> CFG_STAT_DISABLED);
> - if (ret < 0)
> - client->irq = 0;
>
> smb347_set_writable(smb, false);
>
> @@ -1345,6 +1348,7 @@ static int smb347_probe(struct i2c_client *client,
> if (ret < 0) {
> dev_warn(dev, "failed to initialize IRQ: %d\n", ret);
> dev_warn(dev, "disabling IRQ support\n");
> + smb->irq_unsupported = true;
> } else {
> smb347_irq_enable(smb);
> }
> @@ -1357,8 +1361,8 @@ static int smb347_remove(struct i2c_client *client)
> {
> struct smb347_charger *smb = i2c_get_clientdata(client);
>
> - if (client->irq)
> - smb347_irq_disable(smb);
> + smb347_irq_disable(smb);
> +
> return 0;
> }
>
> --
> 2.29.2
>
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