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    Subject[PATCH 5.4 070/453] media: msi2500: assign SPI bus number dynamically
    Date
    From: Antti Palosaari <crope@iki.fi>

    commit 9c60cc797cf72e95bb39f32316e9f0e5f85435f9 upstream.

    SPI bus number must be assigned dynamically for each device, otherwise it
    will crash when multiple devices are plugged to system.

    Reported-and-tested-by: syzbot+c60ddb60b685777d9d59@syzkaller.appspotmail.com

    Cc: stable@vger.kernel.org
    Signed-off-by: Antti Palosaari <crope@iki.fi>
    Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/media/usb/msi2500/msi2500.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/media/usb/msi2500/msi2500.c
    +++ b/drivers/media/usb/msi2500/msi2500.c
    @@ -1230,7 +1230,7 @@ static int msi2500_probe(struct usb_inte
    }

    dev->master = master;
    - master->bus_num = 0;
    + master->bus_num = -1;
    master->num_chipselect = 1;
    master->transfer_one_message = msi2500_transfer_one_message;
    spi_master_set_devdata(master, dev);

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