From: Colin Ian King <[email protected]> Don't populate the read-only arrays edge_det_values, rise_values and fall_values on the stack but instead make them static and constify them. Makes the object code smaller by over 240 bytes:
Before: text data bss dec hex filename 9525 2520 192 12237 2fcd drivers/gpio/gpio-stmpe.o After: text data bss dec hex filename 9025 2776 192 11993 2ed9 drivers/gpio/gpio-stmpe.o (gcc version 7.2.0 x86_64) Signed-off-by: Colin Ian King <[email protected]> --- drivers/gpio/gpio-stmpe.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c index e6e5cca624a7..e3d048e65339 100644 --- a/drivers/gpio/gpio-stmpe.c +++ b/drivers/gpio/gpio-stmpe.c @@ -273,15 +273,21 @@ static void stmpe_dbg_show_one(struct seq_file *s, u8 fall_reg; u8 irqen_reg; - char *edge_det_values[] = {"edge-inactive", - "edge-asserted", - "not-supported"}; - char *rise_values[] = {"no-rising-edge-detection", - "rising-edge-detection", - "not-supported"}; - char *fall_values[] = {"no-falling-edge-detection", - "falling-edge-detection", - "not-supported"}; + static const char * const edge_det_values[] = { + "edge-inactive", + "edge-asserted", + "not-supported" + }; + static const char * const rise_values[] = { + "no-rising-edge-detection", + "rising-edge-detection", + "not-supported" + }; + static const char * const fall_values[] = { + "no-falling-edge-detection", + "falling-edge-detection", + "not-supported" + }; #define NOT_SUPPORTED_IDX 2 u8 edge_det = NOT_SUPPORTED_IDX; u8 rise = NOT_SUPPORTED_IDX; -- 2.14.1
