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: David Cross <david.cross@cypress.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/westbridge/astoria/gadget/cyasgadget.c b/drivers/staging/westbridge/astoria/gadget/cyasgadget.c
index 48080b3..756ff27 100644 (file)
--- a/drivers/staging/westbridge/astoria/gadget/cyasgadget.c
+++ b/drivers/staging/westbridge/astoria/gadget/cyasgadget.c
@@ -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) */