linux-kernel - [PATCH V6 01/24] mmc: core: Cleanup printing of speed mode at card insertion

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221213090047.3805-2-victor.shih@genesyslogic.com.tw>
Date:   Tue, 13 Dec 2022 17:00:24 +0800
From:   Victor Shih <victorshihgli@...il.com>
To:     ulf.hansson@...aro.org, adrian.hunter@...el.com
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        benchuanggli@...il.com, HL.Liu@...esyslogic.com.tw,
        Greg.tu@...esyslogic.com.tw, takahiro.akashi@...aro.org,
        dlunev@...omium.org, Victor Shih <victor.shih@...esyslogic.com.tw>
Subject: [PATCH V6 01/24] mmc: core: Cleanup printing of speed mode at card insertion

The current print of the bus speed mode in mmc_add_card() has grown over
the years and is now difficult to parse. Let's clean up the code and also
take the opportunity to properly announce "DDR" for eMMCs as
"high speed DDR", which is according to the eMMC spec.

Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Victor Shih <victor.shih@...esyslogic.com.tw>
---
 drivers/mmc/core/bus.c | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 36679f4e9acc..bbbbdbca5366 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -299,6 +299,7 @@ int mmc_add_card(struct mmc_card *card)
 {
 	int ret;
 	const char *type;
+	const char *speed_mode = "";
 	const char *uhs_bus_speed_mode = "";
 	static const char *const uhs_speeds[] = {
 		[UHS_SDR12_BUS_SPEED] = "SDR12 ",
@@ -337,25 +338,29 @@ int mmc_add_card(struct mmc_card *card)
 		break;
 	}
 
+	if (mmc_card_hs(card))
+		speed_mode = "high speed ";
+	else if (mmc_card_uhs(card))
+		speed_mode = "ultra high speed ";
+	else if	(mmc_card_ddr52(card))
+		speed_mode = "high speed DDR ";
+	else if (mmc_card_hs200(card))
+		speed_mode = "HS200 ";
+	else if (mmc_card_hs400es(card))
+		speed_mode = "HS400 Enhanced strobe ";
+	else if (mmc_card_hs400(card))
+		speed_mode = "HS400 ";
+
 	if (mmc_card_uhs(card) &&
 		(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
 		uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
 
-	if (mmc_host_is_spi(card->host)) {
-		pr_info("%s: new %s%s%s card on SPI\n",
-			mmc_hostname(card->host),
-			mmc_card_hs(card) ? "high speed " : "",
-			mmc_card_ddr52(card) ? "DDR " : "",
-			type);
-	} else {
-		pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
-			mmc_hostname(card->host),
-			mmc_card_uhs(card) ? "ultra high speed " :
-			(mmc_card_hs(card) ? "high speed " : ""),
-			mmc_card_hs400(card) ? "HS400 " :
-			(mmc_card_hs200(card) ? "HS200 " : ""),
-			mmc_card_hs400es(card) ? "Enhanced strobe " : "",
-			mmc_card_ddr52(card) ? "DDR " : "",
+	if (mmc_host_is_spi(card->host))
+		pr_info("%s: new %s%s card on SPI\n",
+			mmc_hostname(card->host), speed_mode, type);
+	else {
+		pr_info("%s: new %s%s%s card at address %04x\n",
+			mmc_hostname(card->host), speed_mode,
 			uhs_bus_speed_mode, type, card->rca);
 	}
 
-- 
2.25.1