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bh=aBy6oO+inyKHcMQdy6pAoVQzBvvI9ZftXRXsuxLWPyE=; b=JWtGSa/LMjxDVl CozMeSvv2fUXzwN5i+onPrjfnixCXmSIOtckgcmCymDyYs1zzHbjF0j3E7mUWB3PDnIKx0bdfDund dlZRNrmM7nNzxe/RV7Y1zYY/X0smnI6hNlCGrvtOksZnYO1bwDxEXy+Zs1zoynPeB6G285re0OUv1 cfqn90fkqjys16gj3+qfMhf6VRNggV213sGvxxvMlc6wPsyR/jFRN7JpvAI0ArbHSKNRgiDA59qgX IGR9ibjxGEuLNT9cvRBKDqXCmOlnessNHtTc9Weznyafgak8SKUi61W1/fum8Gjc331IjZugTSK/Y ZHzNu0aUWb+pd5t1Ef3g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qIt95-00C3jd-0G; Mon, 10 Jul 2023 15:49:51 +0000 Received: from mga11.intel.com ([192.55.52.93]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qIt8y-00C3cH-16; Mon, 10 Jul 2023 15:49:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689004184; x=1720540184; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=REWyC/nAC6Z96ggpA1NLsyDE3cGETw1DuCTFixDA/T8=; b=DOlDU8TU3zCkyRntM+AQFRtZQBDarOaiyLbE/lo1qpnW9jfNN93rM6Jp J9GjMgp3eOWYf2gP8zNWqoAUnZKwzXFBPJmmfGnmuzf+AEreizPjGqnTU uDKzrw90M1BPrDD0Mqvwrh+xHEVypxaRX3RJhU49qakcFbzqpz0VxFUD6 ARoaITkMXFshVDTStnGgxDMoJ8BKP7zJmheAfjrBgaKFePGg16DQ9h9+F ZpCBxSQic0tg4yUQkNhp4m7IAKW0VjFh0uABxUyg2sP4zRBgd2Yc+sMxD khubodGipQwf4tseORUJikt5CGEs6Fs+Ei8Gx6TDOJl1W4aFnmJidYsFP w==; X-IronPort-AV: E=McAfee;i="6600,9927,10767"; a="361842420" X-IronPort-AV: E=Sophos;i="6.01,194,1684825200"; d="scan'208";a="361842420" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jul 2023 08:49:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10767"; a="720743949" X-IronPort-AV: E=Sophos;i="6.01,194,1684825200"; d="scan'208";a="720743949" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga002.jf.intel.com with ESMTP; 10 Jul 2023 08:49:29 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 36E48385; Mon, 10 Jul 2023 18:49:34 +0300 (EEST) From: Andy Shevchenko To: Mark Brown , Cristian Ciocaltea , Yang Yingliang , Andy Shevchenko , Amit Kumar Mahapatra via Alsa-devel , Neil Armstrong , Tharun Kumar P , Vijaya Krishna Nivarthi , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?q?=C3=B6nig?= , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-riscv@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, linux-trace-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: Sanjay R Mehta , Radu Pirea , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Tudor Ambarus , Serge Semin , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Matthias Brugger , AngeloGioacchino Del Regno , Andy Gross , Bjorn Andersson , Konrad Dybcio , Heiko Stuebner , Palmer Dabbelt , Paul Walmsley , Orson Zhai , Baolin Wang , Chunyan Zhang , Alain Volmat , Maxime Coquelin , Alexandre Torgue , Max Filippov , Steven Rostedt , Masami Hiramatsu , Richard Cochran Subject: [PATCH v2 02/15] spi: Drop duplicate IDR allocation code in spi_register_controller() Date: Mon, 10 Jul 2023 18:49:19 +0300 Message-Id: <20230710154932.68377-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.40.0.1.gaa8946217a0b In-Reply-To: <20230710154932.68377-1-andriy.shevchenko@linux.intel.com> References: <20230710154932.68377-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230710_084944_392151_19CD048C X-CRM114-Status: GOOD ( 18.52 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Refactor spi_register_controller() to drop duplicate IDR allocation. Instead of if-else-if branching use two sequential if:s, which allows to re-use the logic of IDR allocation in all cases. Signed-off-by: Andy Shevchenko --- drivers/spi/spi.c | 50 ++++++++++++++++++++++------------------------- 1 file changed, 23 insertions(+), 27 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 8f3282a71c63..6d74218cf38e 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3081,6 +3081,20 @@ static int spi_controller_check_ops(struct spi_controller *ctlr) return 0; } +/* Allocate dynamic bus number using Linux idr */ +static int spi_controller_id_alloc(struct spi_controller *ctlr, int start, int end) +{ + int id; + + mutex_lock(&board_lock); + id = idr_alloc(&spi_master_idr, ctlr, start, end, GFP_KERNEL); + mutex_unlock(&board_lock); + if (WARN(id < 0, "couldn't get idr")) + return id == -ENOSPC ? -EBUSY : id; + ctlr->bus_num = id; + return 0; +} + /** * spi_register_controller - register SPI master or slave controller * @ctlr: initialized master, originally from spi_alloc_master() or @@ -3108,8 +3122,8 @@ int spi_register_controller(struct spi_controller *ctlr) { struct device *dev = ctlr->dev.parent; struct boardinfo *bi; + int first_dynamic; int status; - int id, first_dynamic; if (!dev) return -ENODEV; @@ -3122,27 +3136,13 @@ int spi_register_controller(struct spi_controller *ctlr) if (status) return status; + if (ctlr->bus_num < 0) + ctlr->bus_num = of_alias_get_id(ctlr->dev.of_node, "spi"); if (ctlr->bus_num >= 0) { /* Devices with a fixed bus num must check-in with the num */ - mutex_lock(&board_lock); - id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, - ctlr->bus_num + 1, GFP_KERNEL); - mutex_unlock(&board_lock); - if (WARN(id < 0, "couldn't get idr")) - return id == -ENOSPC ? -EBUSY : id; - ctlr->bus_num = id; - } else { - /* Allocate dynamic bus number using Linux idr */ - id = of_alias_get_id(ctlr->dev.of_node, "spi"); - if (id >= 0) { - ctlr->bus_num = id; - mutex_lock(&board_lock); - id = idr_alloc(&spi_master_idr, ctlr, ctlr->bus_num, - ctlr->bus_num + 1, GFP_KERNEL); - mutex_unlock(&board_lock); - if (WARN(id < 0, "couldn't get idr")) - return id == -ENOSPC ? -EBUSY : id; - } + status = spi_controller_id_alloc(ctlr, ctlr->bus_num, ctlr->bus_num + 1); + if (status) + return status; } if (ctlr->bus_num < 0) { first_dynamic = of_alias_get_highest_id("spi"); @@ -3151,13 +3151,9 @@ int spi_register_controller(struct spi_controller *ctlr) else first_dynamic++; - mutex_lock(&board_lock); - id = idr_alloc(&spi_master_idr, ctlr, first_dynamic, - 0, GFP_KERNEL); - mutex_unlock(&board_lock); - if (WARN(id < 0, "couldn't get idr")) - return id; - ctlr->bus_num = id; + status = spi_controller_id_alloc(ctlr, first_dynamic, 0); + if (status) + return status; } ctlr->bus_lock_flag = 0; init_completion(&ctlr->xfer_completion);