From patchwork Fri May 24 16:00:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremie Samuel X-Patchwork-Id: 2611911 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id ABF4C3FD4E for ; Fri, 24 May 2013 16:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755521Ab3EXQBi (ORCPT ); Fri, 24 May 2013 12:01:38 -0400 Received: from co202.xi-lite.net ([149.6.83.202]:35687 "EHLO co202.xi-lite.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755337Ab3EXQBg (ORCPT ); Fri, 24 May 2013 12:01:36 -0400 Received: from ONYX.xi-lite.lan (unknown [193.34.35.244]) by co202.xi-lite.net (Postfix) with ESMTPS id 5506A260361; Fri, 24 May 2013 18:18:56 +0200 (CEST) Received: from debian.parrot.biz (46.218.109.88) by mail.xi-lite.com (193.34.32.105) with Microsoft SMTP Server (TLS) id 8.1.336.0; Fri, 24 May 2013 17:01:52 +0100 From: Jeremie Samuel To: , Chris Ball CC: , , Jeremie Samuel , Anton Vorontsov Subject: [PATCH 8/8] sdhci: Use jiffies instead of a timeout counter Date: Fri, 24 May 2013 18:00:42 +0200 Message-ID: <1369411242-20515-9-git-send-email-jeremie.samuel.ext@parrot.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1369411242-20515-1-git-send-email-jeremie.samuel.ext@parrot.com> References: <1369411242-20515-1-git-send-email-jeremie.samuel.ext@parrot.com> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Just a cosmetic change, should not affect functionality. Patch based on: http://thread.gmane.org/gmane.linux.kernel.mmc/2579. Signed-off-by: Anton Vorontsov Signed-off-by: Jeremie Samuel --- drivers/mmc/host/sdhci.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 4a6b716..f121822 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -198,17 +198,16 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) host->clock = 0; /* Wait max 100 ms */ - timeout = 100; + timeout = jiffies + msecs_to_jiffies(100); /* hw clears the bit when it's done */ while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { - if (timeout == 0) { + if (time_after(jiffies, timeout)) { pr_err("%s: Reset 0x%x never completed.\n", mmc_hostname(host->mmc), (int)mask); sdhci_dumpregs(host); return; } - timeout--; msleep(1); } @@ -984,7 +983,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) WARN_ON(host->cmd); /* Wait max 10 ms */ - timeout = 10; + timeout = jiffies + msecs_to_jiffies(10); mask = SDHCI_CMD_INHIBIT; if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) @@ -996,7 +995,7 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) mask &= ~SDHCI_DATA_INHIBIT; while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { - if (timeout == 0) { + if (time_after(jiffies, timeout)) { pr_err("%s: Controller never released " "inhibit bit(s).\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); @@ -1004,7 +1003,6 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) schedule_work(&host->finish_work); return; } - timeout--; mdelay(1); } @@ -1216,16 +1214,15 @@ clock_set: sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); /* Wait max 20 ms */ - timeout = 20; + timeout = jiffies + msecs_to_jiffies(20); while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) & SDHCI_CLOCK_INT_STABLE)) { - if (timeout == 0) { + if (time_after(jiffies, timeout)) { pr_err("%s: Internal clock never " "stabilised.\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); return; } - timeout--; msleep(1); } @@ -1878,12 +1875,12 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) * Issue CMD19 repeatedly till Execute Tuning is set to 0 or the number * of loops reaches 40 times or a timeout of 150ms occurs. */ - timeout = 150; + timeout = jiffies + msecs_to_jiffies(150); do { struct mmc_command cmd = {0}; struct mmc_request mrq = {NULL}; - if (!tuning_loop_counter && !timeout) + if (!tuning_loop_counter && time_after(jiffies, timeout)) break; cmd.opcode = opcode; @@ -1954,7 +1951,6 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); tuning_loop_counter--; - timeout--; msleep(1); } while (ctrl & SDHCI_CTRL_EXEC_TUNING); @@ -1962,7 +1958,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) * The Host Driver has exhausted the maximum number of loops allowed, * so use fixed sampling frequency. */ - if (!tuning_loop_counter || !timeout) { + if (!tuning_loop_counter || time_after(jiffies, timeout)) { ctrl &= ~SDHCI_CTRL_TUNED_CLK; sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); } else {