diff options
author | Markus Elfring <elfring@users.sourceforge.net> | 2017-09-06 20:45:11 +0200 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2017-09-07 10:32:30 +0200 |
commit | 1f5ca8ec58eaa9d42a2474ecae335ead3f845ba1 (patch) | |
tree | c5c84a119ccbfad5d578e40d7f8a73a077d4b16e /sound/pci/ymfpci | |
parent | f804fff1361c9da30efc21721dc0ae5934413c4b (diff) | |
download | op-kernel-dev-1f5ca8ec58eaa9d42a2474ecae335ead3f845ba1.zip op-kernel-dev-1f5ca8ec58eaa9d42a2474ecae335ead3f845ba1.tar.gz |
ALSA: ymfpci: Use common error handling code in snd_card_ymfpci_probe()
* Add a jump target so that a bit of exception handling can be better
reused at the end of this function.
This issue was detected by using the Coccinelle software.
* The script "checkpatch.pl" pointed information out like the following.
ERROR: do not use assignment in if condition
Thus fix a few source code places.
[ This also fixed a potential use-after-free at error path of
snd_opl3_hwdep_new(), too -- tiwai ]
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ymfpci')
-rw-r--r-- | sound/pci/ymfpci/ymfpci.c | 62 |
1 files changed, 30 insertions, 32 deletions
diff --git a/sound/pci/ymfpci/ymfpci.c b/sound/pci/ymfpci/ymfpci.c index 4faf3e1..eafdee3 100644 --- a/sound/pci/ymfpci/ymfpci.c +++ b/sound/pci/ymfpci/ymfpci.c @@ -268,10 +268,9 @@ static int snd_card_ymfpci_probe(struct pci_dev *pci, if ((err = snd_ymfpci_create(card, pci, old_legacy_ctrl, &chip)) < 0) { - snd_card_free(card); release_and_free_resource(mpu_res); release_and_free_resource(fm_res); - return err; + goto free_card; } chip->fm_res = fm_res; chip->mpu_res = mpu_res; @@ -283,35 +282,31 @@ static int snd_card_ymfpci_probe(struct pci_dev *pci, card->shortname, chip->reg_area_phys, chip->irq); - if ((err = snd_ymfpci_pcm(chip, 0)) < 0) { - snd_card_free(card); - return err; - } - if ((err = snd_ymfpci_pcm_spdif(chip, 1)) < 0) { - snd_card_free(card); - return err; - } + err = snd_ymfpci_pcm(chip, 0); + if (err < 0) + goto free_card; + + err = snd_ymfpci_pcm_spdif(chip, 1); + if (err < 0) + goto free_card; + err = snd_ymfpci_mixer(chip, rear_switch[dev]); - if (err < 0) { - snd_card_free(card); - return err; - } + if (err < 0) + goto free_card; + if (chip->ac97->ext_id & AC97_EI_SDAC) { err = snd_ymfpci_pcm_4ch(chip, 2); - if (err < 0) { - snd_card_free(card); - return err; - } + if (err < 0) + goto free_card; + err = snd_ymfpci_pcm2(chip, 3); - if (err < 0) { - snd_card_free(card); - return err; - } - } - if ((err = snd_ymfpci_timer(chip, 0)) < 0) { - snd_card_free(card); - return err; + if (err < 0) + goto free_card; } + err = snd_ymfpci_timer(chip, 0); + if (err < 0) + goto free_card; + if (chip->mpu_res) { if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_YMFPCI, mpu_port[dev], @@ -336,21 +331,24 @@ static int snd_card_ymfpci_probe(struct pci_dev *pci, legacy_ctrl &= ~YMFPCI_LEGACY_FMEN; pci_write_config_word(pci, PCIR_DSXG_LEGACY, legacy_ctrl); } else if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) { - snd_card_free(card); dev_err(card->dev, "cannot create opl3 hwdep\n"); - return err; + goto free_card; } } snd_ymfpci_create_gameport(chip, dev, legacy_ctrl, legacy_ctrl2); - if ((err = snd_card_register(card)) < 0) { - snd_card_free(card); - return err; - } + err = snd_card_register(card); + if (err < 0) + goto free_card; + pci_set_drvdata(pci, card); dev++; return 0; + +free_card: + snd_card_free(card); + return err; } static void snd_card_ymfpci_remove(struct pci_dev *pci) |