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Nathan Chancellor 6894d179bd memstick: core: Zero initialize id_reg in h_memstick_read_dev_id() ... commit 21b34a3a204ed616373a12ec17dc127ebe51eab3 upstream. A new warning in clang [1] points out that id_reg is uninitialized then passed to memstick_init_req() as a const pointer: drivers/memstick/core/memstick.c:330:59: error: variable 'id_reg' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 330 | memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, &id_reg, | ^~~~~~ Commit de182cc8e8 ("drivers/memstick/core/memstick.c: avoid -Wnonnull warning") intentionally passed this variable uninitialized to avoid an -Wnonnull warning from a NULL value that was previously there because id_reg is never read from the call to memstick_init_req() in h_memstick_read_dev_id(). Just zero initialize id_reg to avoid the warning, which is likely happening in the majority of builds using modern compilers that support '-ftrivial-auto-var-init=zero'. Cc: stable@vger.kernel.org Fixes: de182cc8e8 ("drivers/memstick/core/memstick.c: avoid -Wnonnull warning") Link: 00dacf8c22 [1] Closes: https://github.com/ClangBuiltLinux/linux/issues/2105 Signed-off-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250715-memstick-fix-uninit-const-pointer-v1-1-f6753829c27a@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-08-28 16:21:15 +02:00
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core	memstick: core: Zero initialize id_reg in h_memstick_read_dev_id()	2025-08-28 16:21:15 +02:00
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