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w1: ds2438: fixing bug that would always get page0

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[ Upstream commit 1f5e7518f0 ]

The purpose of the w1_ds2438_get_page function is to get the register
values at the page passed as the pageno parameter. However, the page0 was
hardcoded, such that the function always returned the page0 contents. Fixed
so that the function can retrieve any page.

Signed-off-by: Luiz Sampaio <sampaio.ime@gmail.com>
Link: https://lore.kernel.org/r/20210519223046.13798-5-sampaio.ime@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Luiz Sampaio
2021-05-19 19:30:44 -03:00
committed by Greg Kroah-Hartman
parent 8e8d910e9a
commit 20c62caf2e
1 changed files with 2 additions and 2 deletions
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4
drivers/w1/slaves/w1_ds2438.c
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@@ -62,13 +62,13 @@ static int w1_ds2438_get_page(struct w1_slave *sl, int pageno, u8 *buf)
if (w1_reset_select_slave(sl))
continue;
w1_buf[0] = W1_DS2438_RECALL_MEMORY;
w1_buf[1] = 0x00;
w1_buf[1] = (u8)pageno;
w1_write_block(sl->master, w1_buf, 2);
if (w1_reset_select_slave(sl))
continue;
w1_buf[0] = W1_DS2438_READ_SCRATCH;
w1_buf[1] = 0x00;
w1_buf[1] = (u8)pageno;
w1_write_block(sl->master, w1_buf, 2);
count = w1_read_block(sl->master, buf, DS2438_PAGE_SIZE + 1);