From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org, Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Cc: Hennerich@vger.kernel.org, Michael <Michael.Hennerich@analog.com>,
Nuno Sa <Nuno.Sa@analog.com>,
lars@metafoo.de, Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: [PATCH v3 01/20] staging:iio:adc:ad7280a: Fix handing of device address bit reversing.
Date: Sun, 6 Feb 2022 19:03:09 +0000 [thread overview]
Message-ID: <20220206190328.333093-2-jic23@kernel.org> (raw)
In-Reply-To: <20220206190328.333093-1-jic23@kernel.org>
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The bit reversal was wrong for bits 1 and 3 of the 5 bits.
Result is driver failure to probe if you have more than 2 daisy-chained
devices. Discovered via QEMU based device emulation.
Fixes tag is for when this moved from a macro to a function, but it
was broken before that.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fixes: 065a7c0b1fec ("Staging: iio: adc: ad7280a.c: Fixed Macro argument reuse")
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
---
drivers/staging/iio/adc/ad7280a.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index fef0055b8990..20183b2ea127 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -107,9 +107,9 @@
static unsigned int ad7280a_devaddr(unsigned int addr)
{
return ((addr & 0x1) << 4) |
- ((addr & 0x2) << 3) |
+ ((addr & 0x2) << 2) |
(addr & 0x4) |
- ((addr & 0x8) >> 3) |
+ ((addr & 0x8) >> 2) |
((addr & 0x10) >> 4);
}
--
2.35.1
next prev parent reply other threads:[~2022-02-06 18:57 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-06 19:03 [PATCH v3 00/20] iio:adc:ad7280a Cleanup and proposed staging graduation Jonathan Cameron
2022-02-06 19:03 ` Jonathan Cameron [this message]
2022-02-06 19:03 ` [PATCH v3 02/20] staging:iio:adc:ad7280a: Register define cleanup Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 03/20] staging:iio:adc:ad7280a: rename _read() to _read_reg() Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 04/20] staging:iio:adc:ad7280a: Split buff[2] into tx and rx parts Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 05/20] staging:iio:adc:ad7280a: Use bitfield ops to managed fields in transfers Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 06/20] staging:iio:adc:ad7280a: Switch to standard event control Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 07/20] staging:iio:adc:ad7280a: Standardize extended ABI naming Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 08/20] staging:iio:adc:ad7280a: Drop unused timestamp channel Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 09/20] staging:iio:adc:ad7280a: Trivial comment formatting cleanup Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 10/20] staging:iio:adc:ad7280a: Make oversampling_ratio a runtime control Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 11/20] staging:iio:adc:ad7280a: Cleanup includes Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 12/20] staging:iio:ad7280a: Reflect optionality of irq in ABI Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 13/20] staging:iio:adc:ad7280a: Use a local dev pointer to avoid &spi->dev Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 14/20] staging:iio:adc:ad7280a: Use device properties to replace platform data Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 15/20] staging:iio:adc:ad7280a: Drop buggy support for early termination of AUX alert Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 16/20] dt-bindings:iio:adc:ad7280a: Add binding Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 17/20] iio:adc:ad7280a: Document ABI for cell balance switches Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 18/20] staging:iio:adc:ad7280a: Remove shift from cb_mask state cache Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 19/20] staging:iio:adc:ad7280a: Use more conservative delays to allow 105C operation Jonathan Cameron
2022-02-06 19:03 ` [PATCH v3 20/20] iio:adc:ad7280a: Move out of staging Jonathan Cameron
2022-02-13 20:11 ` [PATCH v3 00/20] iio:adc:ad7280a Cleanup and proposed staging graduation Marcelo Schmitt
2022-02-18 11:59 ` Jonathan Cameron
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