From: Dmitry Osipenko digetx@gmail.com
[ Upstream commit 6996312642d2dad3070c3d276c7621f35e721f30 ]
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 digetx@gmail.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 d3bf35ed12cee..8cfbd8d6b4786 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; }