[BUG] drivers/spi: a possible sleep-in-atomic bug in atmel_spi_remove

According to drivers/spi/spi-atmel.c, the kernel module may sleep under a spinlock. The function call path is: atmel_spi_remove (acquire the spinlock) atmel_spi_release_dma dma_release_channel mutex_lock --> may sleep I do not find a good way to fix it, so I only report. This

[BUG] drivers/spi: a possible sleep-in-atomic bug in atmel_spi_remove

According to drivers/spi/spi-atmel.c, the kernel module may sleep under a spinlock. The function call path is: atmel_spi_remove (acquire the spinlock) atmel_spi_release_dma dma_release_channel mutex_lock --> may sleep I do not find a good way to fix it, so I only report. This