The phram code implements managing multiple devices through a linked list. However, due to the module parameter permission of 0, the /sys/module/phram/parameters/phram interface is missing. The command line arguments in insmod can only create one device.
Therefore, add writable permissions to the module parameters, create /sys/module/phram/parameters/phram interface, and create multi-device support. Signed-off-by: Xiaoming Ni <nixiaom...@huawei.com> --- drivers/mtd/devices/phram.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index c467286..931e5c2 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -294,7 +294,7 @@ static int phram_param_call(const char *val, const struct kernel_param *kp) #endif } -module_param_call(phram, phram_param_call, NULL, NULL, 000); +module_param_call(phram, phram_param_call, NULL, NULL, 0200); MODULE_PARM_DESC(phram, "Memory region to map. \"phram=<name>,<start>,<length>\""); -- 1.8.5.6
