• Marek Vasut's avatar
    ARM: shmobile: Fix R-Car Gen2 regulator quirk · 5347a020
    Marek Vasut authored
    The quirk code currently detects all compatible I2C chips with a shared
    IRQ line on all I2C busses, adds them into a list, and registers a bus
    notifier. For every chip for which the bus notifier triggers, the quirk
    code performs I2C transfer on that I2C bus for all addresses in the list.
    The problem is that this may generate transfers to non-existing chips on
    systems with multiple I2C busses.
    
    This patch adds a check to verify that the I2C bus to which the chip with
    shared IRQ is attached to matches the I2C bus of the chip which triggered
    the bus notifier and only starts the I2C transfer if they match.
    Signed-off-by: 's avatarMarek Vasut <marek.vasut+renesas@gmail.com>
    Tested-by: 's avatarNguyen Viet Dung <dung.nguyen.aj@renesas.com>
    Signed-off-by: 's avatarSimon Horman <horms+renesas@verge.net.au>
    5347a020
regulator-quirk-rcar-gen2.c 5.68 KB