Colin Ian King 8200597fb1 clk: vc5: fix use of memory after it has been kfree'd
There are a several places where printing an error message of
init.name occurs after init.name has been kfree'd. Also the failure
message is duplicated each time in the code. Fix this by adding
a registration error failure path for these cases, moving the
duplicated error messages to one common point and kfree'ing init.name
only after it has been used.

Changes also shrink the object code size by 171 bytes (x86-64, gcc 9.3):

Before:
   text	   data	    bss	    dec	    hex	filename
  21057	   3960	     64	  25081	   61f9	drivers/clk/clk-versaclock5.o

After:
   text	   data	    bss	    dec	    hex	filename
  20886	   3960	     64	  24910	   614e	drivers/clk/clk-versaclock5.o

Addresses-Coverity: ("Use after free")
Fixes: f491276a51 ("clk: vc5: Allow Versaclock driver to support multiple instances")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200625132736.88832-1-colin.king@canonical.com
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
[sboyd@kernel.org: Drop stray newline]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-07-22 18:46:24 -07:00
2020-06-14 12:45:04 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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