Staging: serqt_usb2: fix qt_close parameters in serqt_usb2
[linux/fpc-iii.git] / sound / sound_firmware.c
blob96deaefaa89756058eb68ac38ca89d9224f12f60
1 #include <linux/vmalloc.h>
2 #include <linux/module.h>
3 #include <linux/fs.h>
4 #include <linux/mm.h>
5 #include <linux/slab.h>
6 #include <linux/sched.h>
7 #include <asm/uaccess.h>
8 #include "oss/sound_firmware.h"
10 static int do_mod_firmware_load(const char *fn, char **fp)
12 struct file* filp;
13 long l;
14 char *dp;
15 loff_t pos;
17 filp = filp_open(fn, 0, 0);
18 if (IS_ERR(filp))
20 printk(KERN_INFO "Unable to load '%s'.\n", fn);
21 return 0;
23 l = filp->f_path.dentry->d_inode->i_size;
24 if (l <= 0 || l > 131072)
26 printk(KERN_INFO "Invalid firmware '%s'\n", fn);
27 filp_close(filp, current->files);
28 return 0;
30 dp = vmalloc(l);
31 if (dp == NULL)
33 printk(KERN_INFO "Out of memory loading '%s'.\n", fn);
34 filp_close(filp, current->files);
35 return 0;
37 pos = 0;
38 if (vfs_read(filp, dp, l, &pos) != l)
40 printk(KERN_INFO "Failed to read '%s'.\n", fn);
41 vfree(dp);
42 filp_close(filp, current->files);
43 return 0;
45 filp_close(filp, current->files);
46 *fp = dp;
47 return (int) l;
50 /**
51 * mod_firmware_load - load sound driver firmware
52 * @fn: filename
53 * @fp: return for the buffer.
55 * Load the firmware for a sound module (up to 128K) into a buffer.
56 * The buffer is returned in *fp. It is allocated with vmalloc so is
57 * virtually linear and not DMAable. The caller should free it with
58 * vfree when finished.
60 * The length of the buffer is returned on a successful load, the
61 * value zero on a failure.
63 * Caution: This API is not recommended. Firmware should be loaded via
64 * request_firmware.
67 int mod_firmware_load(const char *fn, char **fp)
69 int r;
70 mm_segment_t fs = get_fs();
72 set_fs(get_ds());
73 r = do_mod_firmware_load(fn, fp);
74 set_fs(fs);
75 return r;
77 EXPORT_SYMBOL(mod_firmware_load);
79 MODULE_LICENSE("GPL");