[ALSA] Fix permissions in some /proc files

PCM Midlevel,CA0106 driver,EMU10K1/EMU10K2 driver
Fix by Guillaume Chazarain <[email protected]>:

Some tunables in /proc have a write() function, but as their
permission does not reflect it, it can be confusing to the user.

So here is a patch that corrects the mode of those files. Note that I
have only tested the 'xrun_debug' entry.

Signed-off-by: Takashi Iwai <[email protected]>

sound/core/pcm.c

@@ -451,6 +451,7 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr)
 		entry->c.text.read = snd_pcm_xrun_debug_read;
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_pcm_xrun_debug_write;
+		entry->mode |= S_IWUSR;
 		entry->private_data = pstr;
 		if (snd_info_register(entry) < 0) {
 			snd_info_free_entry(entry);

sound/core/pcm_memory.c

@@ -204,6 +204,7 @@ static int snd_pcm_lib_preallocate_pages1(snd_pcm_substream_t *substream,
 		entry->c.text.read = snd_pcm_lib_preallocate_proc_read;
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_pcm_lib_preallocate_proc_write;
+		entry->mode |= S_IWUSR;
 		entry->private_data = substream;
 		if (snd_info_register(entry) < 0) {
 			snd_info_free_entry(entry);

sound/pci/ca0106/ca0106_proc.c

@@ -418,6 +418,7 @@ int __devinit snd_ca0106_proc_init(ca0106_t * emu)
 		snd_info_set_text_ops(entry, emu, 1024, snd_ca0106_proc_reg_read32);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_ca0106_proc_reg_write32;
+		entry->mode |= S_IWUSR;
 	}
 	if(! snd_card_proc_new(emu->card, "ca0106_reg16", &entry))
 		snd_info_set_text_ops(entry, emu, 1024, snd_ca0106_proc_reg_read16);
@@ -427,6 +428,7 @@ int __devinit snd_ca0106_proc_init(ca0106_t * emu)
 		snd_info_set_text_ops(entry, emu, 1024, snd_ca0106_proc_reg_read1);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_ca0106_proc_reg_write;
+		entry->mode |= S_IWUSR;
 //		entry->private_data = emu;
 	}
 	if(! snd_card_proc_new(emu->card, "ca0106_regs2", &entry)) 

sound/pci/emu10k1/emu10k1x.c

@@ -1075,6 +1075,7 @@ static int __devinit snd_emu10k1x_proc_init(emu10k1x_t * emu)
 		snd_info_set_text_ops(entry, emu, 1024, snd_emu10k1x_proc_reg_read);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu10k1x_proc_reg_write;
+		entry->mode |= S_IWUSR;
 		entry->private_data = emu;
 	}
 

sound/pci/emu10k1/emuproc.c

@@ -527,26 +527,31 @@ int __devinit snd_emu10k1_proc_init(emu10k1_t * emu)
 		snd_info_set_text_ops(entry, emu, 1024, snd_emu_proc_io_reg_read);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu_proc_io_reg_write;
+		entry->mode |= S_IWUSR;
 	}
 	if (! snd_card_proc_new(emu->card, "ptr_regs00a", &entry)) {
 		snd_info_set_text_ops(entry, emu, 65536, snd_emu_proc_ptr_reg_read00a);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu_proc_ptr_reg_write00;
+		entry->mode |= S_IWUSR;
 	}
 	if (! snd_card_proc_new(emu->card, "ptr_regs00b", &entry)) {
 		snd_info_set_text_ops(entry, emu, 65536, snd_emu_proc_ptr_reg_read00b);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu_proc_ptr_reg_write00;
+		entry->mode |= S_IWUSR;
 	}
 	if (! snd_card_proc_new(emu->card, "ptr_regs20a", &entry)) {
 		snd_info_set_text_ops(entry, emu, 65536, snd_emu_proc_ptr_reg_read20a);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu_proc_ptr_reg_write20;
+		entry->mode |= S_IWUSR;
 	}
 	if (! snd_card_proc_new(emu->card, "ptr_regs20b", &entry)) {
 		snd_info_set_text_ops(entry, emu, 65536, snd_emu_proc_ptr_reg_read20b);
 		entry->c.text.write_size = 64;
 		entry->c.text.write = snd_emu_proc_ptr_reg_write20;
+		entry->mode |= S_IWUSR;
 	}
 #endif