[alsa-devel] ALSA: emu10k1: Use standard printk helpers

[Dan Carpenter]

Hello Takashi Iwai,

The patch 6f002b02166c: "ALSA: emu10k1: Use standard printk helpers"
from Feb 25, 2014, leads to the following static checker warning:

	sound/pci/emu10k1/io.c:75 snd_emu10k1_ptr_write()
	error: we previously assumed 'emu' could be null (see line 74)

sound/pci/emu10k1/io.c
    68  void snd_emu10k1_ptr_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data)
    69  {
    70          unsigned int regptr;
    71          unsigned long flags;
    72          unsigned int mask;
    73  
    74          if (!emu) {
                    ^^^^
    75                  dev_err(emu->card->dev, "ptr_write: emu is null!\n");
                                ^^^^^^^^^^^^^^
Dereference.

    76                  dump_stack();
    77                  return;
    78          }

regards,
dan carpenter