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[3.13.y-ckt,stable] Patch "iio:adc:mcp3422 Fix incorrect scales table" has been added to staging queue

Message ID 1428357463-13904-1-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa April 6, 2015, 9:57 p.m. UTC 
This is a note to let you know that I have just added a patch titled

    iio:adc:mcp3422 Fix incorrect scales table

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt19.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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From 5be78b2f4576ca50f84067342e3e4d639f9f03e8 Mon Sep 17 00:00:00 2001
From: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Date: Wed, 4 Feb 2015 15:14:26 +0100
Subject: iio:adc:mcp3422 Fix incorrect scales table

commit 9e128ced3851d2802b6db870f6b2e93f449ce013 upstream.

This patch fixes uncorrect order of mcp3422_scales table, the values
was erroneously transposed.
It removes also an unused array and a wrong comment.

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/iio/adc/mcp3422.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

--
1.9.1
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Patch

diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index c8c1baa..4ac989d 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -57,20 +57,11 @@ 
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
 	}

-/* LSB is in nV to eliminate floating point */
-static const u32 rates_to_lsb[] = {1000000, 250000, 62500, 15625};
-
-/*
- *  scales calculated as:
- *  rates_to_lsb[sample_rate] / (1 << pga);
- *  pga is 1 for 0, 2
- */
-
 static const int mcp3422_scales[4][4] = {
-	{ 1000000, 250000, 62500, 15625 },
-	{ 500000 , 125000, 31250, 7812 },
-	{ 250000 , 62500 , 15625, 3906 },
-	{ 125000 , 31250 , 7812 , 1953 } };
+	{ 1000000, 500000, 250000, 125000 },
+	{ 250000 , 125000, 62500 , 31250  },
+	{ 62500  , 31250 , 15625 , 7812   },
+	{ 15625  , 7812  , 3906  , 1953   } };

 /* Constant msleep times for data acquisitions */
 static const int mcp3422_read_times[4] = {