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Samsung mach/soc changes for v5.16

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A minor fix for theoretical issue when handling IRQ setup code errors in
 S3C24xx and a cleanup for S3C64xx.
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Merge tag 'samsung-soc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/soc

Samsung mach/soc changes for v5.16

A minor fix for theoretical issue when handling IRQ setup code errors in
S3C24xx and a cleanup for S3C64xx.

* tag 'samsung-soc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: s3c: Use strscpy to replace strlcpy
  ARM: s3c: irq-s3c24xx: Fix return value check for s3c24xx_init_intc()

Link: https://lore.kernel.org/r/20211026094709.75692-5-krzysztof.kozlowski@canonical.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2021-10-26 17:00:54 +02:00
commit d3c2a69919
2 changed files with 19 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
arch/arm/mach-s3c/irq-s3c24xx.c
View File

@ -361,11 +361,25 @@ static inline int s3c24xx_handle_intc(struct s3c_irq_intc *intc,
static asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs)
{
do {
if (likely(s3c_intc[0]))
/*
* For platform based machines, neither ERR nor NULL can happen here.
* The s3c24xx_handle_irq() will be set as IRQ handler iff this succeeds:
*
* s3c_intc[0] = s3c24xx_init_intc()
*
* If this fails, the next calls to s3c24xx_init_intc() won't be executed.
*
* For DT machine, s3c_init_intc_of() could set the IRQ handler without
* setting s3c_intc[0] only if it was called with num_ctrl=0. There is no
* such code path, so again the s3c_intc[0] will have a valid pointer if
* set_handle_irq() is called.
*
* Therefore in s3c24xx_handle_irq(), the s3c_intc[0] is always something.
*/
if (s3c24xx_handle_intc(s3c_intc[0], regs, 0))
continue;
if (s3c_intc[2])
if (!IS_ERR_OR_NULL(s3c_intc[2]))
if (s3c24xx_handle_intc(s3c_intc[2], regs, 64))
continue;

2
arch/arm/mach-s3c/mach-mini6410.c
View File

@ -262,7 +262,7 @@ static char mini6410_features_str[12] __initdata = "0";
static int __init mini6410_features_setup(char *str)
{
if (str)
strlcpy(mini6410_features_str, str,
strscpy(mini6410_features_str, str,
sizeof(mini6410_features_str));
return 1;
}