From: Colin King <colin.king@canonical.com> To: Ulrik De Bie <ulrik.debie-os@e2big.org>, KT Liao <kt.liao@emc.com.tw>, Matti Kurkela <Matti.Kurkela@iki.fi>, Colin Ian King <colin.king@canonical.com>, linux-input@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] input: elantech: make arrays debounce_packet static, reduces object code size Date: Wed, 6 Sep 2017 13:59:44 +0100 [thread overview] Message-ID: <20170906125944.16936-1-colin.king@canonical.com> (raw) From: Colin Ian King <colin.king@canonical.com> Don't populate the arrays debounce_packet on the stack, instead make them static. Makes the object code smaller by over 870 bytes: Before: text data bss dec hex filename 30553 9152 0 39705 9b19 drivers/input/mouse/elantech.o After: text data bss dec hex filename 29521 9312 0 38833 97b1 drivers/input/mouse/elantech.o Signed-off-by: Colin Ian King <colin.king@canonical.com> --- drivers/input/mouse/elantech.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 6428d6f4d568..b84cd978fce2 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -700,7 +700,9 @@ static int elantech_debounce_check_v2(struct psmouse *psmouse) * When we encounter packet that matches this exactly, it means the * hardware is in debounce status. Just ignore the whole packet. */ - const u8 debounce_packet[] = { 0x84, 0xff, 0xff, 0x02, 0xff, 0xff }; + static const u8 debounce_packet[] = { + 0x84, 0xff, 0xff, 0x02, 0xff, 0xff + }; unsigned char *packet = psmouse->packet; return !memcmp(packet, debounce_packet, sizeof(debounce_packet)); @@ -741,7 +743,9 @@ static int elantech_packet_check_v2(struct psmouse *psmouse) static int elantech_packet_check_v3(struct psmouse *psmouse) { struct elantech_data *etd = psmouse->private; - const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff }; + static const u8 debounce_packet[] = { + 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff + }; unsigned char *packet = psmouse->packet; /* -- 2.14.1
WARNING: multiple messages have this Message-ID (diff)
From: Colin King <colin.king@canonical.com> To: Ulrik De Bie <ulrik.debie-os@e2big.org>, KT Liao <kt.liao@emc.com.tw>, Matti Kurkela <Matti.Kurkela@iki.fi>, Colin Ian King <colin.king@canonical.com>, linux-input@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] input: elantech: make arrays debounce_packet static, reduces object code size Date: Wed, 06 Sep 2017 12:59:44 +0000 [thread overview] Message-ID: <20170906125944.16936-1-colin.king@canonical.com> (raw) From: Colin Ian King <colin.king@canonical.com> Don't populate the arrays debounce_packet on the stack, instead make them static. Makes the object code smaller by over 870 bytes: Before: text data bss dec hex filename 30553 9152 0 39705 9b19 drivers/input/mouse/elantech.o After: text data bss dec hex filename 29521 9312 0 38833 97b1 drivers/input/mouse/elantech.o Signed-off-by: Colin Ian King <colin.king@canonical.com> --- drivers/input/mouse/elantech.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 6428d6f4d568..b84cd978fce2 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -700,7 +700,9 @@ static int elantech_debounce_check_v2(struct psmouse *psmouse) * When we encounter packet that matches this exactly, it means the * hardware is in debounce status. Just ignore the whole packet. */ - const u8 debounce_packet[] = { 0x84, 0xff, 0xff, 0x02, 0xff, 0xff }; + static const u8 debounce_packet[] = { + 0x84, 0xff, 0xff, 0x02, 0xff, 0xff + }; unsigned char *packet = psmouse->packet; return !memcmp(packet, debounce_packet, sizeof(debounce_packet)); @@ -741,7 +743,9 @@ static int elantech_packet_check_v2(struct psmouse *psmouse) static int elantech_packet_check_v3(struct psmouse *psmouse) { struct elantech_data *etd = psmouse->private; - const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff }; + static const u8 debounce_packet[] = { + 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff + }; unsigned char *packet = psmouse->packet; /* -- 2.14.1
next reply other threads:[~2017-09-06 13:00 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-09-06 12:59 Colin King [this message] 2017-09-06 12:59 ` [PATCH] input: elantech: make arrays debounce_packet static, reduces object code size Colin King 2017-09-07 21:31 ` Dmitry Torokhov 2017-09-07 21:31 ` Dmitry Torokhov
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