nwflash.c (cf9ce948f47640797bd19980e1d99c6d17d0bdc3) nwflash.c (b25472f9b96159cc0b9b7ed449448805973cd789)
1/*
2 * Flash memory interface rev.5 driver for the Intel
3 * Flash chips used on the NetWinder.
4 *
5 * 20/08/2000 RMK use __ioremap to map flash into virtual memory
6 * make a few more places use "volatile"
7 * 22/05/2001 RMK - Lock read against write
8 * - merge printk level changes (with mods) from Alan Cox.

--- 263 unchanged lines hidden (view full) ---

272{
273 loff_t ret;
274
275 mutex_lock(&flash_mutex);
276 if (flashdebug)
277 printk(KERN_DEBUG "flash_llseek: offset=0x%X, orig=0x%X.\n",
278 (unsigned int) offset, orig);
279
1/*
2 * Flash memory interface rev.5 driver for the Intel
3 * Flash chips used on the NetWinder.
4 *
5 * 20/08/2000 RMK use __ioremap to map flash into virtual memory
6 * make a few more places use "volatile"
7 * 22/05/2001 RMK - Lock read against write
8 * - merge printk level changes (with mods) from Alan Cox.

--- 263 unchanged lines hidden (view full) ---

272{
273 loff_t ret;
274
275 mutex_lock(&flash_mutex);
276 if (flashdebug)
277 printk(KERN_DEBUG "flash_llseek: offset=0x%X, orig=0x%X.\n",
278 (unsigned int) offset, orig);
279
280 switch (orig) {
281 case 0:
282 if (offset < 0) {
283 ret = -EINVAL;
284 break;
285 }
286
287 if ((unsigned int) offset > gbFlashSize) {
288 ret = -EINVAL;
289 break;
290 }
291
292 file->f_pos = (unsigned int) offset;
293 ret = file->f_pos;
294 break;
295 case 1:
296 if ((file->f_pos + offset) > gbFlashSize) {
297 ret = -EINVAL;
298 break;
299 }
300 if ((file->f_pos + offset) < 0) {
301 ret = -EINVAL;
302 break;
303 }
304 file->f_pos += offset;
305 ret = file->f_pos;
306 break;
307 default:
308 ret = -EINVAL;
309 }
280 ret = no_seek_end_llseek_size(file, offset, orig, gbFlashSize);
310 mutex_unlock(&flash_mutex);
311 return ret;
312}
313
314
315/*
316 * assume that main Write routine did the parameter checking...
317 * so just go ahead and erase, what requested!

--- 337 unchanged lines hidden --- 		281 mutex_unlock(&flash_mutex);
282 return ret;
283}
284
285
286/*
287 * assume that main Write routine did the parameter checking...
288 * so just go ahead and erase, what requested!

--- 337 unchanged lines hidden ---