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New: System sluggish when using ENE SD card reader

Bugme-new Andrew Morton 1 participant 1 message Apr 1, 2010 1 message not in the archive MMC, SD and SDIO

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A message that is not in the archive (sent off-list or not yet received): [email protected]/

Andrew Morton

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(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).

Quoted 107 lines · On Wed, 31 Mar 2010 11:09:28 GMT [email protected] wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=15656

Summary: System sluggish when using ENE SD card reader
Product: Drivers
Version: 2.5
Kernel Version: 2.6.33 and earlier
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: MMC/SD
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No

My system becomes incredibly sluggish (jerky X cursor, choppy audio) when accessing an SD card with my notebook's built-in ENE card reader. The kernel was compiled with full pre-emption enabled.

Quoted 1 line

From lspci -nn:

0c:07.0 FLASH memory [0501]: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller [1524:0730]
0c:07.1 SD Host controller [0805]: ENE Technology Inc ENE PCI SmartMedia / xD Card Reader Controller [1524:0750]
0c:07.3 FLASH memory [0501]: ENE Technology Inc ENE PCI Secure Digital / MMC Card Reader Controller [1524:0751]

Quoted 1 line

From dmesg|grep sdhci,

sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pci 0000:0c:07.1: SDHCI controller found [1524:0750] (rev 0) sdhci-pci 0000:0c:07.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: SDHCI controller found [1524:0751] (rev 0) sdhci-pci 0000:0c:07.3: enabling device (0000 -> 0002)
sdhci-pci 0000:0c:07.3: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A disabled
sdhci-pci 0000:0c:07.1: PCI INT A disabled
sdhci-pci 0000:0c:07.1: restoring config space at offset 0xf (was 0x482001ff, writing 0x48200105)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00400)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x3 (was 0x800000, writing 0x802010)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100106)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00100)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100002)
sdhci-pci 0000:0c:07.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A disabled
sdhci-pci 0000:0c:07.1: PCI INT A disabled
sdhci-pci 0000:0c:07.1: restoring config space at offset 0xf (was 0x482001ff, writing 0x48200105)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00400)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x3 (was 0x800000, writing 0x802010)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100106)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00100)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100002)
sdhci-pci 0000:0c:07.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A disabled
sdhci-pci 0000:0c:07.1: PCI INT A disabled
sdhci-pci 0000:0c:07.1: restoring config space at offset 0xf (was 0x482001ff, writing 0x48200105)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00400)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x3 (was 0x800000, writing 0x802010)
sdhci-pci 0000:0c:07.1: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100106)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x4 (was 0x0, writing 0xf0f00100)
sdhci-pci 0000:0c:07.3: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100002)
sdhci-pci 0000:0c:07.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 sdhci-pci 0000:0c:07.3: PCI INT A -> GSI 16 (level, low) -> IRQ 16

and finally dmesg|grep mmc:

sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray Registered led device: mmc0::
mmc0: SDHCI controller on PCI [0000:0c:07.1] using PIO Registered led device: mmc1::
mmc1: SDHCI controller on PCI [0000:0c:07.3] using PIO
mmc1: new high speed SDHC card at address 0007
mmcblk0: mmc1:0007 SD16G 15.0 GiB
mmcblk0: p1
SELinux: initialized (dev mmcblk0p1, type vfat), uses genfs_contexts
mmc1: card 0007 removed