Dear All, As a part of my driver testing instead of using sg lists I am directly submitting the URB after merging all the sgs into a single URB buffer in usb-storage driver. While converting the sg address into virtual address (sg_virt(sg)) I am seeing 0, sometimes. Why am I seeing this return value? I have seen some comments about it, in usb_sg_init() function which is defined in driver/usb/message.c file. In this routine also, sg_virt() is used, however there is PageHighMem(sg_page(sg)) condition in there. Should I disable the CONFIG_HIGHMEM in the kernel while building the kernel images? Any ideas will be appreciated. Thanks and Regards, Ramya. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
