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From: Dan Carpenter <dan.carpenter@oracle.com>
To: amit.kucheria@linaro.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>, linux-pm@vger.kernel.org
Subject: [bug report] drivers: thermal: tsens: Merge tsens-8974 into tsens-v0_1
Date: Tue, 14 May 2019 12:06:35 +0300	[thread overview]
Message-ID: <20190514090635.GA21833@mwanda> (raw)

Hello Amit Kucheria,

The patch c80cbb79e851: "drivers: thermal: tsens: Merge tsens-8974
into tsens-v0_1" from Mar 20, 2019, leads to the following static
checker warning:

	drivers/thermal/qcom/tsens-v0_1.c:237 calibrate_8974()
	warn: mask and shift to zero

drivers/thermal/qcom/tsens-v0_1.c
   226                  case ONE_PT_CALIB:
   227                  case ONE_PT_CALIB2:
   228                          base1 = bkp[0] & BASE1_MASK;
   229                          p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
   230                          p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
   231                          p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
   232                          p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
   233                          p1[4] = (bkp[1] & S4_P1_MASK);
   234                          p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
   235                          p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
   236                          p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
   237                          p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
                                                  ^^^^^^^^^^^^^^     ^^^^^^^^^^^
#define S8_P1_MASK_BKP          0x3f
#define S8_P1_SHIFT 24

Other places define S8_P1_SHIFT as 4, so that's maybe something to
consider.

   238                          p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
   239                          p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
   240                          break;
   241                  }
   242          } else {
   243                  mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
   244                  mode |= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;

regards,
dan carpenter

             reply	other threads:[~2019-05-14  9:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-14  9:06 Dan Carpenter [this message]
2020-07-13 11:44 ` [bug report] drivers: thermal: tsens: Merge tsens-8974 into tsens-v0_1 Dan Carpenter
2021-03-19 19:50   ` Daniel Lezcano
2021-03-22  1:18     ` Thara Gopinath

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