From patchwork Sat Jun 29 06:58:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 809161 Received: from smtp.smtpout.orange.fr (smtp-15.smtpout.orange.fr [80.12.242.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 282E01CF9B; Sat, 29 Jun 2024 06:59:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.12.242.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719644347; cv=none; b=mbSb+Fvp8wRd8rAfCe2HbEys4sG/fF5XF1fIF8H/+KdnJKnccErAc8wjZjzHrsNRNxnWMINJGY5VjJjc8Yi7m62eHbibyvh4RY9ts65bVCEuCoHNmFzQ9ezQq4uBgBSELrmbeRLo1E8gQ1bkpjC4NMUh3Jd4jLG6d3XjMyUcwoY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719644347; c=relaxed/simple; bh=6KyjtX5hOxB5LlFjn7fgJk+/s9NXrVzZ9ltFbNSFa2U=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=c2rOU53onIwN8wRks1YDYeRXIbfsEoKNTkneepKAONJS6u8aUPAIk8AHyXDlMJpgJZkuCC/VEPs0bJofbsq3F4WUBPI7nhSsar1BAWtUvqZs7Ih/s4sxGNWdJGUjNWnK8k1ERcDJQFc5XS5gUlC0uIH7Xxplm4mLP/jWRRJ9rew= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wanadoo.fr; spf=pass smtp.mailfrom=wanadoo.fr; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b=RFdThJhf; arc=none smtp.client-ip=80.12.242.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wanadoo.fr header.i=@wanadoo.fr header.b="RFdThJhf" Received: from fedora.home ([86.243.222.230]) by smtp.orange.fr with ESMTPA id NS2ussK9tE745NS2vs6O5R; Sat, 29 Jun 2024 08:58:56 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wanadoo.fr; s=t20230301; t=1719644336; bh=7ZffAGKYDmgIjO3VVxySPyiErhAqXhow8CsGzx+lLxE=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=RFdThJhfv4vP0hsVXmPTV5moPfCdjkgSOtnIqkWMriydYqth15YzuIU7lvY7cYBYD SxTULNmD8MBCbXjHJUwQy0f3hk1hMCh6uWVJykx9fay1rYE8U52k0tRgmWUNx9okxd YfebuiBFrfp+8CjStf3Y9/L6y6x6olhY2w7w9HYLqq1lKvOETEIg8iW+8K1altibgl 6+/JosxD5GUz4zE9v23oRPFn13dL3ZE/LIlxRWXzpowNqG4NC+zyPnIH4rBMitnHVQ 4JK8CLFEeZ5kuvWKjI+RchpY5MS84JOMNC117wT5DfMXRFnQ8IgOacLOiGjQ/LI/bL usaVooEKFjHIA== X-ME-Helo: fedora.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 29 Jun 2024 08:58:56 +0200 X-ME-IP: 86.243.222.230 From: Christophe JAILLET To: "Rafael J. Wysocki" , Len Brown , Andy Shevchenko , Mika Westerberg , Hans de Goede Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , linux-acpi@vger.kernel.org Subject: [PATCH] ACPI: PMIC: Constify struct pmic_table Date: Sat, 29 Jun 2024 08:58:42 +0200 Message-ID: X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 'struct pmic_table' is not modified in these drivers. Constifying this structure moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 3811 786 0 4597 11f5 drivers/acpi/pmic/intel_pmic_xpower.o text data bss dec hex filename 4147 450 0 4597 11f5 drivers/acpi/pmic/intel_pmic_xpower.o Signed-off-by: Christophe JAILLET --- Compile tested-only --- drivers/acpi/pmic/intel_pmic.c | 2 +- drivers/acpi/pmic/intel_pmic.h | 4 ++-- drivers/acpi/pmic/intel_pmic_bxtwc.c | 4 ++-- drivers/acpi/pmic/intel_pmic_bytcrc.c | 4 ++-- drivers/acpi/pmic/intel_pmic_chtdc_ti.c | 4 ++-- drivers/acpi/pmic/intel_pmic_chtwc.c | 2 +- drivers/acpi/pmic/intel_pmic_xpower.c | 4 ++-- 7 files changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c index f20dbda1a831..134e9ca8eaa2 100644 --- a/drivers/acpi/pmic/intel_pmic.c +++ b/drivers/acpi/pmic/intel_pmic.c @@ -31,7 +31,7 @@ struct intel_pmic_opregion { static struct intel_pmic_opregion *intel_pmic_opregion; -static int pmic_get_reg_bit(int address, struct pmic_table *table, +static int pmic_get_reg_bit(int address, const struct pmic_table *table, int count, int *reg, int *bit) { int i; diff --git a/drivers/acpi/pmic/intel_pmic.h b/drivers/acpi/pmic/intel_pmic.h index d956b03a6ca0..006f0780ffab 100644 --- a/drivers/acpi/pmic/intel_pmic.h +++ b/drivers/acpi/pmic/intel_pmic.h @@ -21,9 +21,9 @@ struct intel_pmic_opregion_data { u32 reg_address, u32 value, u32 mask); int (*lpat_raw_to_temp)(struct acpi_lpat_conversion_table *lpat_table, int raw); - struct pmic_table *power_table; + const struct pmic_table *power_table; int power_table_count; - struct pmic_table *thermal_table; + const struct pmic_table *thermal_table; int thermal_table_count; /* For generic exec_mipi_pmic_seq_element handling */ int pmic_i2c_address; diff --git a/drivers/acpi/pmic/intel_pmic_bxtwc.c b/drivers/acpi/pmic/intel_pmic_bxtwc.c index e247615189fa..c332afbf82bd 100644 --- a/drivers/acpi/pmic/intel_pmic_bxtwc.c +++ b/drivers/acpi/pmic/intel_pmic_bxtwc.c @@ -24,7 +24,7 @@ #define VSWITCH1_OUTPUT BIT(4) #define VUSBPHY_CHARGE BIT(1) -static struct pmic_table power_table[] = { +static const struct pmic_table power_table[] = { { .address = 0x0, .reg = 0x63, @@ -177,7 +177,7 @@ static struct pmic_table power_table[] = { } /* MOFF -> MODEMCTRL Bit 0 */ }; -static struct pmic_table thermal_table[] = { +static const struct pmic_table thermal_table[] = { { .address = 0x00, .reg = 0x4F39 diff --git a/drivers/acpi/pmic/intel_pmic_bytcrc.c b/drivers/acpi/pmic/intel_pmic_bytcrc.c index 2b09f8da5400..b4c21a75294a 100644 --- a/drivers/acpi/pmic/intel_pmic_bytcrc.c +++ b/drivers/acpi/pmic/intel_pmic_bytcrc.c @@ -16,7 +16,7 @@ #define PMIC_A0LOCK_REG 0xc5 -static struct pmic_table power_table[] = { +static const struct pmic_table power_table[] = { /* { .address = 0x00, .reg = ??, @@ -134,7 +134,7 @@ static struct pmic_table power_table[] = { }, /* V105 -> V1P05S, L2 SRAM */ }; -static struct pmic_table thermal_table[] = { +static const struct pmic_table thermal_table[] = { { .address = 0x00, .reg = 0x75 diff --git a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c index 79f9df552524..ecb36fbc1e7f 100644 --- a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c +++ b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c @@ -23,7 +23,7 @@ #define CHTDC_TI_BPTHERM 0x58 #define CHTDC_TI_GPADC 0x5a -static struct pmic_table chtdc_ti_power_table[] = { +static const struct pmic_table chtdc_ti_power_table[] = { { .address = 0x00, .reg = 0x41 }, /* LDO1 */ { .address = 0x04, .reg = 0x42 }, /* LDO2 */ { .address = 0x08, .reg = 0x43 }, /* LDO3 */ @@ -39,7 +39,7 @@ static struct pmic_table chtdc_ti_power_table[] = { { .address = 0x30, .reg = 0x4e }, /* LD14 */ }; -static struct pmic_table chtdc_ti_thermal_table[] = { +static const struct pmic_table chtdc_ti_thermal_table[] = { { .address = 0x00, .reg = CHTDC_TI_GPADC diff --git a/drivers/acpi/pmic/intel_pmic_chtwc.c b/drivers/acpi/pmic/intel_pmic_chtwc.c index 25aa3e33b09a..81caede51ca2 100644 --- a/drivers/acpi/pmic/intel_pmic_chtwc.c +++ b/drivers/acpi/pmic/intel_pmic_chtwc.c @@ -70,7 +70,7 @@ * "regulator: whiskey_cove: implements Whiskey Cove pmic VRF support" * https://github.com/intel-aero/meta-intel-aero/blob/master/recipes-kernel/linux/linux-yocto/0019-regulator-whiskey_cove-implements-WhiskeyCove-pmic-V.patch */ -static struct pmic_table power_table[] = { +static const struct pmic_table power_table[] = { { .address = 0x0, .reg = CHT_WC_V1P8A_CTRL, diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c index 43c5850b4bf3..49bda5e0c8aa 100644 --- a/drivers/acpi/pmic/intel_pmic_xpower.c +++ b/drivers/acpi/pmic/intel_pmic_xpower.c @@ -26,7 +26,7 @@ #define AXP288_ADC_TS_CURRENT_ON_ONDEMAND (2 << 0) #define AXP288_ADC_TS_CURRENT_ON (3 << 0) -static struct pmic_table power_table[] = { +static const struct pmic_table power_table[] = { { .address = 0x00, .reg = 0x13, @@ -129,7 +129,7 @@ static struct pmic_table power_table[] = { }; /* TMP0 - TMP5 are the same, all from GPADC */ -static struct pmic_table thermal_table[] = { +static const struct pmic_table thermal_table[] = { { .address = 0x00, .reg = XPOWER_GPADC_LOW