From 0472fbfd3250d1a33d3de78afdcbf24f78ac026b Mon Sep 17 00:00:00 2001 From: Egbert Eich Date: Tue, 9 Apr 2013 21:11:56 +0000 Subject: part/dev_desc: Add log2 of blocksize to block_dev_desc data struct log2 of the device block size serves as the shift value used to calculate the block number to read in file systems when implementing avaiable block sizes. It is needed quite often in file systems thus it is pre-calculated and stored in the block device descriptor. Signed-off-by: Egbert Eich --- common/usb_storage.c | 1 + 1 file changed, 1 insertion(+) (limited to 'common/usb_storage.c') diff --git a/common/usb_storage.c b/common/usb_storage.c index fb322b4015..c5db044165 100644 --- a/common/usb_storage.c +++ b/common/usb_storage.c @@ -1430,6 +1430,7 @@ int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, *capacity, *blksz); dev_desc->lba = *capacity; dev_desc->blksz = *blksz; + dev_desc->log2blksz = LOG2(dev_desc->blksz); dev_desc->type = perq; USB_STOR_PRINTF(" address %d\n", dev_desc->target); USB_STOR_PRINTF("partype: %d\n", dev_desc->part_type); -- cgit v1.2.3