Commit 4c404487 authored by David Cross's avatar David Cross Committed by Greg Kroah-Hartman
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staging: west bridge: cyasgadget, remove file system / vfs calls 



This patch remove file system specific (fat_get_block) and vfs calls
from the cyasgadget driver. The current implementation expects user
space to write the file (open, seek to end, 1 byte write), followed by a
call to clear the dirty pages from the the page cache.

Signed-off-by: default avatarDavid Cross <david.cross@cypress.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 72bbd9bc

drivers/staging/westbridge/astoria/gadget/cyasgadget.c

+0 −42
Original line number Diff line number Diff line
@@ -1149,11 +1149,9 @@ static int cyasgadget_ioctl( 
			struct inode *inode = mapping->host;

			struct inode *alloc_inode =

				file_to_allocate->f_path.dentry->d_inode;

			int cluster = 0;

			uint32_t num_clusters = 0;

			struct buffer_head bh;

			struct kstat stat;

			struct iattr alloc_iattr;

			int nr_pages = 0;

			int ret_stat = 0;
@@ -1188,47 +1186,7 @@ static int cyasgadget_ioctl( 
			/* block size is arbitrary , we'll use sector size*/

			bh.b_size = SECTOR_SIZE ;



			#ifndef WESTBRIDGE_NDEBUG

			cy_as_hal_print_message("%s: getting fat blocks %d "

				"size of  %d\n", __func__,

				num_clusters, bh.b_size);

			#endif

			for (cluster = 0; cluster < num_clusters; cluster++)  {

				ret_stat = fat_get_block(inode,

					cluster, &bh, 1);

				if (ret_stat) {

					cy_as_hal_print_message(

						"%s: unable to get fat block, "

						"ret_stat=0x%d\n",

						__func__, ret_stat);

					goto initsoj_safe_exit;

				}

			}



			#ifndef WESTBRIDGE_NDEBUG

			cy_as_hal_print_message("%s: allocated clusters "

				"successfully (fat_get_block), check bmap..."

				"\n", __func__);

			#endif



			alloc_iattr.ia_valid = ATTR_SIZE;

			alloc_iattr.ia_size = k_d.num_bytes;



			#ifndef WESTBRIDGE_NDEBUG

			cy_as_hal_print_message("%s: calling fat_notify_change "

				"(ia_valid:%d, ia_size:%d)\n", __func__,

				alloc_iattr.ia_valid,

				(int)alloc_iattr.ia_size);

			#endif



			/* adjust the filesize */

			ret_stat = alloc_inode->i_op->setattr(

				file_to_allocate->f_path.dentry, &alloc_iattr);

			#ifndef WESTBRIDGE_NDEBUG

			cy_as_hal_print_message("%s: fat_setattr() "

				"returned 0x%x\n",

				__func__, ret_stat);

			#endif



			/* clear dirty pages in page cache

			 * (if were any allocated) */