linux-imx
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committed ca1721c5beex
u16 status; result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER, 0x13, (u8 *) & status); if (result) return result; /* * The spec requires that bit 4 always be 1. If it's not set, assume * that the implementation doesn't support an SBS charger * that the implementation doesn't support an SBS charger. * * And on some MacBooks a status of 0xffff is always returned, no * matter whether the charger is plugged in or not, which is also * wrong, so ignore the SBS charger for those too. */ if (!((status >> 4) & 0x1)) if (!((status >> 4) & 0x1) || status == 0xffff) return -ENODEV; sbs->charger_present = (status >> 15) & 0x1; return 0;}static ssize_t acpi_battery_alarm_show(struct device *dev, struct device_attribute *attr, char *buf){