From: Eugeniu Rosca Date: Mon, 1 Apr 2019 10:45:33 +0000 (+0200) Subject: fdt: boot_get_fdt: remove redundant zeroing out X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=d9313efc2e61e8f827ed30c5a911a20c1f43df7c;p=u-boot.git fdt: boot_get_fdt: remove redundant zeroing out Paranoid programming [1] lies at the foundation of proper software development, but the repetitive zeroing-out of output arguments in the context of the same function rather clutters the code and inhibits further refactoring/optimization than is doing any good. In boot_get_fdt(), we already perform zero/NULL-initialization of *of_flat_tree and *of_size at the beginning of the function, so doing the same at function error-out is redundant/superfluous. Moreover, keeping the code unchanged might encourage the developers to update *of_flat_tree and *of_size during some interim computations, which is against the current design of boot_get_fdt(). Currently, writing useful data into these arguments happens just before successfully returning from boot_get_fdt() and it should better stay so. [1] https://blog.regehr.org/archives/1106 Signed-off-by: Eugeniu Rosca Reviewed-by: Simon Glass --- diff --git a/common/image-fdt.c b/common/image-fdt.c index 01186aeac7..1817ce6bce 100644 --- a/common/image-fdt.c +++ b/common/image-fdt.c @@ -489,8 +489,6 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch, no_fdt: ok_no_fdt = 1; error: - *of_flat_tree = NULL; - *of_size = 0; if (!select && ok_no_fdt) { debug("Continuing to boot without FDT\n"); return 0;