lkml.org 
[lkml]   [2021]   [Jul]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH AUTOSEL 5.12 048/104] mfd: cpcap: Fix cpcap dmamask not set warnings
    Date
    From: Tony Lindgren <tony@atomide.com>

    [ Upstream commit 0b7cbe811ca524295ea43d9a4d73d3427e419c54 ]

    We have started to get a bunch of pointless dmamask not set warnings
    that makes the output of dmesg -l err,warn hard to read with many
    extra warnings:

    cpcap-regulator cpcap-regulator.0: DMA mask not set
    cpcap_adc cpcap_adc.0: DMA mask not set
    cpcap_battery cpcap_battery.0: DMA mask not set
    cpcap-charger cpcap-charger.0: DMA mask not set
    cpcap-pwrbutton cpcap-pwrbutton.0: DMA mask not set
    cpcap-led cpcap-led.0: DMA mask not set
    cpcap-led cpcap-led.1: DMA mask not set
    cpcap-led cpcap-led.2: DMA mask not set
    cpcap-led cpcap-led.3: DMA mask not set
    cpcap-led cpcap-led.4: DMA mask not set
    cpcap-rtc cpcap-rtc.0: DMA mask not set
    cpcap-usb-phy cpcap-usb-phy.0: DMA mask not set

    This seems to have started with commit 4d8bde883bfb ("OF: Don't set
    default coherent DMA mask"). We have the parent SPI controller use
    DMA, while CPCAP driver and it's children do not. For audio, the
    DMA is handled over I2S bus with the McBSP driver.

    Cc: Carl Philipp Klemm <philipp@uvos.xyz>
    Cc: Ivan Jelincic <parazyd@dyne.org>
    Cc: Merlijn Wajer <merlijn@wizzup.org>
    Cc: Pavel Machek <pavel@ucw.cz>
    Cc: Sebastian Reichel <sre@kernel.org>
    Cc: Sicelo A. Mhlongo <absicsz@gmail.com>
    Signed-off-by: Tony Lindgren <tony@atomide.com>
    Signed-off-by: Lee Jones <lee.jones@linaro.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/mfd/motorola-cpcap.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/drivers/mfd/motorola-cpcap.c b/drivers/mfd/motorola-cpcap.c
    index 30d82bfe5b02..6fb206da2729 100644
    --- a/drivers/mfd/motorola-cpcap.c
    +++ b/drivers/mfd/motorola-cpcap.c
    @@ -327,6 +327,10 @@ static int cpcap_probe(struct spi_device *spi)
    if (ret)
    return ret;

    + /* Parent SPI controller uses DMA, CPCAP and child devices do not */
    + spi->dev.coherent_dma_mask = 0;
    + spi->dev.dma_mask = &spi->dev.coherent_dma_mask;
    +
    return devm_mfd_add_devices(&spi->dev, 0, cpcap_mfd_devices,
    ARRAY_SIZE(cpcap_mfd_devices), NULL, 0, NULL);
    }
    --
    2.30.2
    \
     
     \ /
      Last update: 2021-07-10 04:40    [W:5.343 / U:0.084 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site