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Diffstat (limited to 'Documentation/sound/kernel-api/writing-an-alsa-driver.rst')
| -rw-r--r-- | Documentation/sound/kernel-api/writing-an-alsa-driver.rst | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/Documentation/sound/kernel-api/writing-an-alsa-driver.rst b/Documentation/sound/kernel-api/writing-an-alsa-driver.rst index 801b0bb57e97..895752cbcedd 100644 --- a/Documentation/sound/kernel-api/writing-an-alsa-driver.rst +++ b/Documentation/sound/kernel-api/writing-an-alsa-driver.rst @@ -4030,31 +4030,6 @@ located in the new subdirectory, sound/pci/xyz. Useful Functions ================ -:c:func:`snd_printk()` and friends ----------------------------------- - -.. note:: This subsection describes a few helper functions for - decorating a bit more on the standard :c:func:`printk()` & co. - However, in general, the use of such helpers is no longer recommended. - If possible, try to stick with the standard functions like - :c:func:`dev_err()` or :c:func:`pr_err()`. - -ALSA provides a verbose version of the :c:func:`printk()` function. -If a kernel config ``CONFIG_SND_VERBOSE_PRINTK`` is set, this function -prints the given message together with the file name and the line of the -caller. The ``KERN_XXX`` prefix is processed as well as the original -:c:func:`printk()` does, so it's recommended to add this prefix, -e.g. snd_printk(KERN_ERR "Oh my, sorry, it's extremely bad!\\n"); - -There are also :c:func:`printk()`'s for debugging. -:c:func:`snd_printd()` can be used for general debugging purposes. -If ``CONFIG_SND_DEBUG`` is set, this function is compiled, and works -just like :c:func:`snd_printk()`. If the ALSA is compiled without -the debugging flag, it's ignored. - -:c:func:`snd_printdd()` is compiled in only when -``CONFIG_SND_DEBUG_VERBOSE`` is set. - :c:func:`snd_BUG()` ------------------- |