From nobody Sat Feb 7 05:01:13 2026 Received: from sonic308-19.consmr.mail.ir2.yahoo.com (sonic308-19.consmr.mail.ir2.yahoo.com [77.238.178.147]) (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 3D078A23 for ; Wed, 27 Nov 2024 00:41:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=77.238.178.147 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732668093; cv=none; b=PbrtKWU/P2nHkOKFB8CjXNw3tJtioOTyjbUxAG89YZWPrmi/GY7DGPc4evJfs2tZ13O55NGU34PZVpHe6ID0mxONeub4gmLFKm+LnYdkG7iBoaYuOun4qv8a0cFaGYiu+6FeOs8G1STknshKwKZOgnygbrZafLb3UBpUHTbcIIk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732668093; c=relaxed/simple; bh=wSnTftQjXX6IVevyMrORMn78ByIlh5J0F8vJt1MQnXk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:References; b=WFN2MwOjJj9/6OcRfXrpwEaJm1AUVM5wuKhCMNaxdgIvL6WWHLp5LL8mD/YsfxdRr/Mir13VN/+TioI4o9OiBSAKSLCX+B1Coj9IStugKyVe4JpreULmoAGZYCC61pFX9cHVJ47U2M/E/mL6qv2fp1kRO9ybOntdttz8oXvYQ3g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=rocketmail.com; spf=pass smtp.mailfrom=rocketmail.com; dkim=pass (2048-bit key) header.d=rocketmail.com header.i=@rocketmail.com header.b=M/NIAOAn; arc=none smtp.client-ip=77.238.178.147 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=rocketmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rocketmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rocketmail.com header.i=@rocketmail.com header.b="M/NIAOAn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rocketmail.com; s=s2048; t=1732668089; bh=MgL+Y0R2nrnBm7+Isag/O8JP2FWkBIMIsTL0WZZiGH0=; h=From:To:Cc:Subject:Date:References:From:Subject:Reply-To; b=M/NIAOAn3ruCV7z6dRLdutBnZ8BLb81OyDT47srxjJS2uwvasv25BOOD6xwIP7Z+FSgUWu3lRwZ0IcDBP5LmIQkO1YP0tcW0UtWxzQF31B9tErUJgUHO8NEnGCRWiJ791W+bIFTnPSRzMYwt2MSwDv1Z5dIKaihGhLTcpPfVEoT/duLo1bM90cvnbmqg9xJMvHDNMltWbk5+uUO6bnxilTNISuc6paOmLjEN/BIl0k55qILPwB44atJJpfvolT0+iNyV9b/g86gCXGgWOQJ6q7gzSXcHIEzUJLLPsZSUdc020TUropkJdqxNP1DqKEiP7AQl13ltBugMRl81sYZikQ== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1732668089; bh=U6g9YrwUFR8HK/08C6+pKVe3owJZ1PezKgNL3Fr0M1Q=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=e7IcudU9v4D1XIICAj44qv7VuNRCKxL+sPMrfhO3VrEaEJFOEzb2HhkIvHf3yAWuQkXwG51jPKl7y/LwZlJWhqW4s/cmjk8XvYO/FQkfttwDKecDXEgh/3vIcm8Bkzq2dpQ0kPv/vD+mVFuYdY93ajPa50AcoanMzS6BK4VOliGAZL9Xf9o77vnrfgY9Y6b97BskgnYTDeRMhljTeDg+UsxXrUhsuYolw4U3GBGLa7tFIINj/KplrF6HOjDZsh9c88D4Q/t2QPcl8qmClTtMGNri3il4olQ+U1EWSJSQyOXVBkL2N7tf/WCvalU6q6l65udjOzMussFylMdCRZNMxg== X-YMail-OSG: 9rcZ73MVM1m1cw2dukGKTtFNYFlxJ03MMqfvacqEXKJIetLz2Dn4pzvbsaIJjr8 diA1MEl3.gXJWdaFVtH.Nhi591wJG.Q8zZbMA2McImuPvQp0ChT78flK3tQf44d.lsm4i3ZIDwMr IBSzgEhFSZECZz7ainjEONQJX2Nlft6WPCAmnPMn5aHyULmtbNlskmxfRtuYqHK_p9VEwU_3Rti0 F8wx5.bvWPgCS0q1HEJQoVi0X024gtkFRmL.Ts5g4Btg8k_sBoVsCXHU.n7gb4LRddd0kIZ6Z2b0 WlpADe81f78d3huAkQw4e7vHhZHTbGIGHqwPZO9kPLEPtKx28gVggV6oawdPghvRd4aA9maZy19o q5LLN4IIbp9v4mVa96jPQ2uwAMZLi8r5VKQQv8e3ewckF_3JRbcyPMnDr4cHmSyMxbv97qqXtQXn P3gAts_jGn.SavlNgGN_9eh2U04.KUk9VgC1ooVywb1KZ4t7bBLa6d7G7Tf4zbD7e9u8c1RMN_H1 Ma7FYhUCAQmMVpnhpAuCY45DTXGO7_40qO_iQxLeXvRJ_EJ2LQchMSP_orfse1OOtCNGtKxyw8As EiGN2EA2xSJY6FXHe10NLs_NWVXnexnrORdnVqpfkuLu_SLkZQBzRgZKGsmTZtoGQCvvyHcObKAB Cf6QTOzGIEDiRCfAbKxkgAPGuf0IXn5ooLsJetAs2oCN..5VfJJuwCMUHSBcEfxmoOk9jyU_cZQR gdDsjjU66EUny5HN9t3cxGOzYxKPrqFJ5Ash8ZU8B1ghS.e3i1._WO3.F.Fv.E1PmbGR9ECRSEId fNww4KyXYxf.iLUDkaR4CrVpnqJX.iSoeH6_U.V89vtUbE1akxFV92QZeAZXQibfMhHFkxCgbroo M0GTnvuXM6vqKXHbpkRwonHRDz7bdRPYZq0UWS5CK5fH4vj.ok7qq1wF.0hgSlSlFe402pnazfKu PWu6tOwMsP47JG1jkFyu4YdWQ6Tdg.97mKbDrWGvUeSF_qSLe6XkZoljkkFGHqtpugnRDbpoRuh7 eW5U2M5BgRT65nyyAqSTxGjFmcUKoOExNYKkUUKZRP4IHN1wyCDemimcIGJXTzLOeyaSgx7VDUBU vvLgrS9a64dzx7.0JH6kNtHu6sszxGfFuKjW_L4fhVxKUSb6b053NK9ysKThp2OGnlNo0Z1aVJaH 19S5aOSHYHU7LOeZvws35G_Ek3_YBj6wCmrYST2NB.XtSkFchSOaizece1cKlmMri7nl_5jq2wS1 08EtjbZc7VczTyKkSRGXasBobNBaScwxJGuo7AdxTvuWB4fcgcE0uVfeWaodf7MY2DoVRBPzFmEF 72q9gYhiTS_x_HaKEsEHWTVGJVH2MEnE.vecZ_p0YMYX5Y2nphpVpv4sQbcQVyr6xwI0NEw6ZknF p.lvM3SPiUOv57UadyAZ_LM.G8qyfFHDj9Tl5yFskbhElgJikBWn2kNYCHNnSS3cvSXfWM5SuG67 EZxxYbYuBT7Oosz3JoHqIFw4iSEAiIJCoz2baEu8GttIUg1nCrrWDJ36BK.rgQByTy7MRGve5YKD bktKfaGNiwXCa2Bu8KVW8D9bIpGgWK2KCUR8evrhmNbtKgUCs64GL48DrOWn5858ecPMP4gH08yY .qI3JlvuGNDWzpVQDo8rpSkMhDVKFhtju_KUkvcrx8456OWL_ga57I7wan1YpSwnzZ5XreAYj254 hfrLlvCKUwdxdwzEznlwbLKQj8VmWeGWW3ddCOVCz3L3Y952GgEzyS6bOJtTEATqOWXLRl09w_vC GnIjCOQOzL654s4rnYpSSk_fUMZi0FxpJXquFwizRWin3yJm4o3MTkqEl.QHkRhIgbQfuaOtHuLz M6UMCP7gSSdg2s8gkblND_gmIXLPBhC14_o7NhvujQaR.Wtdr3StfwP_iF1Ot5qgzKwjrEsL7z0C x1ZGH3.BvUwJVu5UPv6PA6mJgwHr_nCVOALBrqrQeBa1Fpm.hd7q2CdVJuOYYDe2V1NBpbPh63Yz OrWOTuk1P7U9sg3wREOOOV2yVtTq.Uf3RAvLMcPd0YrQFsaRkmOEIvjLm5gbwCaR981m6hy1iHJn Pey6gumWXbzG7e5YVWziw9XR5.MCf5OFQByW.QlOZmsT7JfkLQJuT4VLqk_uJl9jcUSt2iPzHFkr angyWaHh5Wfr3qozEXz9Zehn9rAdzT1YPzywF62TsHgrl0ENeXNxnc5OlhOPqKrfNTYNmbzj.FdQ oK4XguY8PxzCtNnctAseOkxDK_CTDaBW1MgNrLHYVuB4pk.3Kg8ixtHiE9fpjTCfeTe5eypKcz7p DChlbRRJdFGCrnUh3Y4xUDu.XfvoQhQDCmWkctFRjVQ-- X-Sonic-MF: X-Sonic-ID: f08bebbc-9d09-4fe1-97ea-51ff3b275371 Received: from sonic.gate.mail.ne1.yahoo.com by sonic308.consmr.mail.ir2.yahoo.com with HTTP; Wed, 27 Nov 2024 00:41:29 +0000 Received: by hermes--production-ir2-c694d79d9-qp6kn (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID d91172f74165254868bee18e8bab607a; Tue, 26 Nov 2024 23:40:38 +0000 (UTC) From: Jakob Hauser To: Jonathan Cameron , Lars-Peter Clausen Cc: David Laight , Linus Walleij , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Jakob Hauser , kernel test robot Subject: [PATCH] iio: magnetometer: yas530: Use signed integer type for clamp limits Date: Wed, 27 Nov 2024 00:40:21 +0100 Message-Id: <20241126234021.19749-1-jahau@rocketmail.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable References: <20241126234021.19749-1-jahau.ref@rocketmail.com> Content-Type: text/plain; charset="utf-8" In the function yas537_measure() there is a clamp_val() with limits of -BIT(13) and BIT(13) - 1. The input clamp value h[] is of type s32. The BI= T() is of type unsigned long integer due to its define in include/vdso/bits.h. The lower limit -BIT(13) is recognized as -8192 but expressed as an unsigned long integer. The size of an unsigned long integer differs between 32-bit a= nd 64-bit architectures. Converting this to type s32 may lead to undesired behavior. Declaring a signed integer with a value of BIT(13) allows to use it more specifically as a negative value on the lower clamp limit. While at it, replace all BIT(13) in the function yas537_measure() by the si= gned integer. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202411230458.dhZwh3TT-lkp@int= el.com/ Fixes: 65f79b501030 ("iio: magnetometer: yas530: Add YAS537 variant") Cc: David Laight Signed-off-by: Jakob Hauser --- The patch is based on torvalds/linux v6.12. The calculation lines h[0], h[1] and h[2] exceed the limit of 80 characters= per line. In terms of readability I would prefer to keep it that way. --- drivers/iio/magnetometer/yamaha-yas530.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magneto= meter/yamaha-yas530.c index 65011a8598d3..938b35536e0d 100644 --- a/drivers/iio/magnetometer/yamaha-yas530.c +++ b/drivers/iio/magnetometer/yamaha-yas530.c @@ -372,6 +372,7 @@ static int yas537_measure(struct yas5xx *yas5xx, u16 *t= , u16 *x, u16 *y1, u16 *y u8 data[8]; u16 xy1y2[3]; s32 h[3], s[3]; + int half_range =3D BIT(13); int i, ret; =20 mutex_lock(&yas5xx->lock); @@ -406,13 +407,13 @@ static int yas537_measure(struct yas5xx *yas5xx, u16 = *t, u16 *x, u16 *y1, u16 *y /* The second version of YAS537 needs to include calibration coefficients= */ if (yas5xx->version =3D=3D YAS537_VERSION_1) { for (i =3D 0; i < 3; i++) - s[i] =3D xy1y2[i] - BIT(13); - h[0] =3D (c->k * (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / BIT(13); - h[1] =3D (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / BIT(13); - h[2] =3D (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / BIT(13); + s[i] =3D xy1y2[i] - half_range; + h[0] =3D (c->k * (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / half_ra= nge; + h[1] =3D (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / half_ra= nge; + h[2] =3D (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / half_ra= nge; for (i =3D 0; i < 3; i++) { - clamp_val(h[i], -BIT(13), BIT(13) - 1); - xy1y2[i] =3D h[i] + BIT(13); + clamp_val(h[i], -half_range, half_range - 1); + xy1y2[i] =3D h[i] + half_range; } } =20 --=20 2.43.0