spi: of: do not try load modules for of-registered devices

Trying to register an SPI device asynchronously (via async_schedule() call) results in an ugly warning from request_module() warning about potential deadlock (because request_module tries to wait for async works to complete). While we could try to switch to request_module_nowait(), other buses, as well as SPI itself when not using device tree, do not try to load modules, but rather rely on the standard infrastructure (udev) to execute module loading, and we should be doing the same.

---
 drivers/spi/spi.c | 2 --
 1 file changed, 2 deletions(-)

index 66a70e9..e1b15d5 100644
@@ -20,7 +20,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/kmod.h>
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/cache.h>

@@ -1320,7 +1319,6 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
 	spi->dev.of_node = nc;
 
 	/* Register the new device */
-	request_module("%s%s", SPI_MODULE_PREFIX, spi->modalias);
 	rc = spi_add_device(spi);
 	if (rc) {
 		dev_err(&master->dev, "spi_device register error %s\n",

2.2.0.rc0.207.ga3a616c


-- 
Dmitry