linux-toradex.git/drivers/nvmem, branch v4.4.80

nvmem: imx-ocotp: Fix wrong register size

2017-08-07T02:19:46+00:00

[ Upstream commit 14ba972842f9e84e6d3264bc0302101b8a792288 ]

All i.MX6 SoCs have an OCOTP Controller with 4kbit fuses. The i.MX6SL is
an exception and has only 2kbit fuses.

In the TRM for the i.MX6DQ (IMX6QDRM - Rev 2, 06/2014) the fuses size is
described in chapter 46.1.1 with:
"32-bit word restricted program and read to 4Kbits of eFuse OTP(512x8)."

In the TRM for the i.MX6SL (IMX6SLRM - Rev 2, 06/2015) the fuses size is
described in chapter 34.1.1 with:
"32-bit word restricted program and read to 2 kbit of eFuse OTP(128x8)."

Since the Freescale Linux kernel OCOTP driver works with a fuses size of
2 kbit for the i.MX6SL, it looks like the TRM is wrong and the formula
to calculate the correct fuses size has to be 256x8.

Signed-off-by: Daniel Schultz 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

nvmem: mxs-ocotp: fix buffer overflow in read

2016-05-11T09:21:21+00:00

commit d1306eb675ad7a9a760b6b8e8e189824b8db89e7 upstream.

This patch fixes the issue where the mxs_ocotp_read is reading
the ocotp in reg_size steps but decrements the remaining size
by 1. The number of iterations is thus four times higher,
overwriting the area behind the output buffer.

Fixes: c01e9a11ab6f ("nvmem: add driver for ocotp in i.MX23 and i.MX28")
Tested-by: Stefan Wahren 
Signed-off-by: Stanislav Meduna 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

Merge 4.3-rc5 into char-misc next

2015-10-12T17:29:36+00:00

We want the fixes in here as well.

Signed-off-by: Greg Kroah-Hartman

nvmem: sunxi: Check for memory allocation failure

2015-10-04T11:09:43+00:00

The sunxi_sid driver doesn't check for kmalloc return status before
derefencing the returned pointer, which could lead to a NULL pointer
dereference if kmalloc failed. Check for its return code to make sure it
deosn't happen.

Reported-by: Dan Carpenter 
Signed-off-by: Maxime Ripard 
Signed-off-by: Greg Kroah-Hartman

nvmem: core: Fix memory leak in nvmem_cell_write

2015-10-04T11:09:43+00:00

A tmp buffer is allocated if cell->bit_offset || cell->nbits.
So the tmp buffer needs to be freed at the same condition to avoid leak.

Signed-off-by: Axel Lin 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: core: Handle shift bits in-place if cell->nbits is non-zero

2015-10-04T11:09:43+00:00

It's pointless to test (cell->bit_offset || cell->bit_offset).
nvmem_shift_read_buffer_in_place() should be called when
(cell->bit_offset || cell->nbits).

Signed-off-by: Axel Lin 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: core: fix the out-of-range leak in read/write()

2015-10-04T11:09:43+00:00

The position to read/write must be less than max
register size.

Signed-off-by: ZhengShunQian 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: rockchip_efuse_regmap_config can be static

2015-10-04T11:08:14+00:00

Signed-off-by: Fengguang Wu 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: Adding bindings for rockchip-efuse

2015-10-04T11:08:14+00:00

There are some SoC specified values store in eFuse,
such as the cpu_leakage and cpu_version,
this driver can expose these values to /sys base on nvmem.

Signed-off-by: Caesar Wang 
Signed-off-by: ZhengShunQian 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: add driver for ocotp in i.MX23 and i.MX28

2015-10-04T11:06:13+00:00

This patch brings read-only support for the On-Chip OTP cells
in the i.MX23 and i.MX28 processor. The driver implements the
new NVMEM provider API.

Signed-off-by: Stefan Wahren 
Reviewed-by: Marek Vasut 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman