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[S390] tape: remove f_pos changes from read / write function.

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The change to f_pos in the read / write method has no effect as the
value is controlled by the VFS layer, e.g. for vfs_read:

	loff_t pos = file_pos_read(file);
	ret = vfs_read(file, buf, count, &pos);
	file_pos_write(file, pos);

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2009-12-07 12:52:01 +01:00 • committed by Martin Schwidefsky
parent 93521314cb
commit c1b283d55d
1 changed files with 0 additions and 2 deletions
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2
drivers/s390/char/tape_char.c
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@ -170,7 +170,6 @@ tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos)
if (rc == 0) { if (rc == 0) {
rc = block_size - request->rescnt; rc = block_size - request->rescnt;
DBF_EVENT(6, "TCHAR:rbytes: %x\n", rc); DBF_EVENT(6, "TCHAR:rbytes: %x\n", rc);
filp->f_pos += rc;
/* Copy data from idal buffer to user space. */ /* Copy data from idal buffer to user space. */
if (idal_buffer_to_user(device->char_data.idal_buf, if (idal_buffer_to_user(device->char_data.idal_buf,
data, rc) != 0) data, rc) != 0)
@ -238,7 +237,6 @@ tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t
break; break;
DBF_EVENT(6, "TCHAR:wbytes: %lx\n", DBF_EVENT(6, "TCHAR:wbytes: %lx\n",
block_size - request->rescnt); block_size - request->rescnt);
filp->f_pos += block_size - request->rescnt;
written += block_size - request->rescnt; written += block_size - request->rescnt;
if (request->rescnt != 0) if (request->rescnt != 0)
break; break;