linux-toradex.git/drivers/mmc/core/sd_ops.c, branch v4.4.44

mmc: sd: warn if card stays busy during init

2014-07-09T09:26:07+00:00

The initialization of some SD-cards fails because the card never
leaves the busy state. Aid trouble shooting by indicating this in the
kernel log.

Signed-off-by: Johan Rudholm 
Signed-off-by: Ulf Hansson

mmc: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required

2011-10-31T23:32:06+00:00

These two basic defines were everywhere, simply because module.h
was also everywhere.   But we are cleaning up the latter.  So make
the exporters actually call out their need for the include.

Signed-off-by: Paul Gortmaker

mmc: fix integer assignments to pointer

2011-10-26T19:43:35+00:00

Fix the sparse warning output "warning: Using plain integer as NULL pointer"

Signed-off-by: Venkatraman S 
Signed-off-by: Chris Ball

mmc: core: Add mmc CMD+ACMD passthrough ioctl

2011-05-25T01:02:54+00:00

Allows appropriately-privileged applications to send CMD (normal) and ACMD
(application-specific; preceded with CMD55) commands to cards/devices on
the mmc bus.  This is primarily useful for enabling the security
functionality built in to every SD card.

It can also be used as a generic passthrough (e.g. to enable virtual
machines to control mmc bus devices directly).  However, this use case has
not been tested rigorously.  Generic passthrough testing was only conducted
for a few non-security opcodes to prove the feasibility of the passthrough.

Since any opcode can be sent using this passthrough, it is very possible to
render the card/device unusable.  Applications that use this ioctl must
have CAP_SYS_RAWIO.

Security commands tested on TI PCIxx12 (SDHCI), Sigma Designs SMP8652 SoC,
TI OMAP3621/OMAP3630 SoC, Samsung S5PC110 SoC, Qualcomm MSM7200A SoC.

Signed-off-by: John Calixto 
Reviewed-by: Andrei Warkentin 
Reviewed-by: Arnd Bergmann 
Signed-off-by: Chris Ball

mmc: initialize struct mmc_request at declaration time

2011-05-25T01:02:01+00:00

Converts from:
	struct mmc_request mrq;
	memset(&mrq, 0, sizeof(struct mmc_request));

to:
	struct mmc_request mrq = {0};

because it's shorter, as performant, and easier to work out whether
initialization has happened.

Signed-off-by: Chris Ball

mmc: initialize struct mmc_data at declaration time

2011-05-25T01:01:56+00:00

Converts from:
	struct mmc_data data;
	memset(&data, 0, sizeof(struct mmc_data));

to:
	struct mmc_data data = {0};

because it's shorter, as performant, and easier to work out whether
initialization has happened.

Signed-off-by: Chris Ball

mmc: initialize struct mmc_command at declaration time

2011-05-25T01:01:52+00:00

Converts from:
	struct mmc_command cmd;
	memset(&cmd, 0, sizeof(struct mmc_command));

to:
	struct mmc_command cmd = {0};

because it's shorter, as performant, and easier to work out whether
initialization has happened.

Signed-off-by: Chris Ball

mmc: core: Fix use of uninitialized data in mmc_send_if_cond.

2011-05-25T01:01:42+00:00

mmc_send_if_cond did not zero out mmc_command on stack.

Signed-off-by: Chris Ball

mmc: core: Fix use of uninitialized data in mmc_cmd_app.

2011-05-25T01:01:38+00:00

mmc_cmd_app did not zero out mmc_command on stack.

Reported-by: Chuanxiao Dong 
Signed-off-by: Andrei Warkentin 
Signed-off-by: Chris Ball

mmc: fix mmc_app_send_scr() for dma transfer

2011-03-25T14:30:50+00:00

This patch is based on the commit "af51715079e7fb6b290e1881d63d815dc4de5011":

   * Bugfix to that mmc_send_cxd_data() code:  dma-to-stack is
     unsafe/nonportable, so kmalloc a bounce buffer instead.

The driver may invalidate the mmc_card->csd when host driver uses dma.
So this subroutine also needs a kmalloc buffer.

Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Chris Ball